United States Pharmacopoeia (USP) Solutions and Reagents

Reagecon's pH 4.01 at 25°C Potassium Bi Phthalate 0.05M according to United States Pharmacopoeia (USP) is specified for use in individual United States Pharmacopoeia (USP) Monographs. It is tested by an ISO 17025 Accredited Test Method (A2LA Ref: 6739.03); is NIST traceable and has guaranteed stability throughout its entire shelf life; even after opening the bottle.

Reagecon’s A to T Colour Solution Matching Fluid Set is formulated as a set of colour solution matching fluids in accordance with the United States Pharmacopoeia.

Reagecon's pH 12.45 at 25°C Calcium Hydroxide Saturated according to United States Pharmacopoeia (USP) is specified for use in individual United States Pharmacopoeia (USP) Monographs. It is tested by an ISO 17025 Accredited Test Method (A2LA Ref: 6739.03); is NIST traceable and has guaranteed stability throughout its entire shelf life; even after opening the bottle.

Reagecon's Edetate DiSodium TS Solution according to United States Pharmacopoeia (USP) is specified for use in individual United States Pharmacopoeia (USP) Monographs. It is tested by an ISO 17025 Accredited Test Method (A2LA Ref: 6739.03); is NIST traceable and has guaranteed stability throughout its entire shelf life; even after opening the bottle.

Reagecon's Matching Fluid H according to United States Pharmacopoeia (USP) is specified for use in individual United States Pharmacopoeia (USP) Monographs. Has guaranteed stability throughout its entire shelf life, even after opening the bottle.

Reagecon's Ammonia (Ammonium Hydroxide) TS Solution according to United States Pharmacopoeia (USP) is specified for use in individual United States Pharmacopoeia (USP) Monographs. It is tested by an ISO 17025 Accredited Test Method (A2LA Ref: 6739.03); is NIST traceable and has guaranteed stability throughout its entire shelf life; even after opening the bottle.

Reagecon's Bromate-Bromide 0.100N is a fully factorised, high purity, stable product, developed and tested for titrations. This Analytical Volumetric Solution, also called titrant, standard titrant or standard solution, is tested to a specification of ± 0.2%. It is a reagent of known concentration, that is dispensed from a burette or other dispensing apparatus to a sample (analyte), until a reaction between the two liquids is judged to be complete. The product may be used for manual titrations, or more commonly automatic titrations, to determine the end points by detection of any of several properties as detailed in several USP monographs. - Titration is a rapid, economical and versatile analytical tool. This Reagecon titrant is accurate, stable, reproducible and fully factorised. Titrations performed with this product, exhibit defined stochiometry, are quantitative, establish an equilibrium that is definitive and fast and provide unambiguous results. Stability is proven (either opened or unopened) for the shelf life of this product.

Reagecon's Ammonium Thiocyanate 0.1N is a fully factorised, high purity, stable product, developed and tested for titrations. This Analytical Volumetric Solution, also called titrant, standard titrant or standard solution, is tested to a specification of ± 0.2%. It is a reagent of known concentration, that is dispensed from a burette or other dispensing apparatus to a sample (analyte), until a reaction between the two liquids is judged to be complete. The product may be used for manual titrations, or more commonly automatic titrations, to determine the end points by detection of any of several properties as detailed in several USP monographs. - Titration is a rapid, economical and versatile analytical tool. This Reagecon titrant is accurate, stable, reproducible and fully factorised. Titrations performed with this product, exhibit defined stochiometry, are quantitative, establish an equilibrium that is definitive and fast and provide unambiguous results. Stability is proven (either opened or unopened) for the shelf life of this product.

Reagecon's Sodium Hydroxide 0.1N is a fully factorised, high purity, stable product, developed and tested for titrations. This Analytical Volumetric Solution, also called titrant, standard titrant or standard solution, is tested to a specification of ± 0.2%. It is a reagent of known concentration, that is dispensed from a burette or other dispensing apparatus to a sample (analyte), until a reaction between the two liquids is judged to be complete. The product may be used for manual titrations, or more commonly automatic titrations, to determine the end points by detection of any of several properties as detailed in several USP monographs. - Titration is a rapid, economical and versatile analytical tool. This Reagecon titrant is accurate, stable, reproducible and fully factorised. Titrations performed with this product, exhibit defined stochiometry, are quantitative, establish an equilibrium that is definitive and fast and provide unambiguous results. Stability is proven (either opened or unopened) for the shelf life of this product.

Reagecon's Phenolphthalein TS/RS Solution according to United States Pharmacopoeia (USP) is specified for use in individual United States Pharmacopoeia (USP) Monographs. It is tested by an ISO 17025 Accredited Test Method (A2LA Ref: 6739.03); is NIST traceable and has guaranteed stability throughout its entire shelf life; even after opening the bottle.

Reagecon's Zinc Sulphate 0.0500M is a fully factorised, high purity, stable product, developed and tested for titrations. This Analytical Volumetric Solution, also called titrant, standard titrant or standard solution, is tested to a specification of ± 0.2%. It is a reagent of known concentration, that is dispensed from a burette or other dispensing apparatus to a sample (analyte), until a reaction between the two liquids is judged to be complete. The product may be used for manual titrations, or more commonly automatic titrations, to determine the end points by detection of any of several properties as detailed in several USP monographs. - Titration is a rapid, economical and versatile analytical tool. This Reagecon titrant is accurate, stable, reproducible and fully factorised. Titrations performed with this product, exhibit defined stochiometry, are quantitative, establish an equilibrium that is definitive and fast and provide unambiguous results. Stability is proven (either opened or unopened) for the shelf life of this product.

Reagecon's Ammonia; Ammonium Chloride Buffer TS Solution according to United States Pharmacopoeia (USP) is specified for use in individual United States Pharmacopoeia (USP) Monographs. It is tested by an ISO 17025 Accredited Test Method (A2LA Ref: 6739.03); is NIST traceable and has guaranteed stability throughout its entire shelf life; even after opening the bottle.

Reagecon's Hydrochloric Acid Dilute Solution according to United States Pharmacopoeia (USP) is specified for use in individual United States Pharmacopoeia (USP) Monographs. It is tested by an ISO 17025 Accredited Test Method (A2LA Ref: 6739.03); is NIST traceable and has guaranteed stability throughout its entire shelf life; even after opening the bottle.

Reagecon's Ferric Ammonium Sulfate 0.1N is a fully factorised, high purity, stable product, developed and tested for titrations. This Analytical Volumetric Solution, also called titrant, standard titrant or standard solution, is tested to a specification of ± 0.2%. It is a reagent of known concentration, that is dispensed from a burette or other dispensing apparatus to a sample (analyte), until a reaction between the two liquids is judged to be complete. The product may be used for manual titrations, or more commonly automatic titrations, to determine the end points by detection of any of several properties as detailed in several USP monographs. - Titration is a rapid, economical and versatile analytical tool. This Reagecon AVL is accurate, stable, reproducible and fully factorised. Titrations performed with this product, exhibit defined stoichiometry, are quantitative, establish an equilibrium that is definitive and fast and provide unambiguous results. Stability is proven (either opened or unopened) for the shelf life of this product.

Reagecon's Resorcinol TS Solution according to United States Pharmacopoeia (USP) is specified for use in individual United States Pharmacopoeia (USP) Monographs. It is tested by an ISO 17025 Accredited Test Method (A2LA Ref: 6739.03); is NIST traceable and has guaranteed stability throughout its entire shelf life; even after opening the bottle.

Reagecon's Resorcinol TS Solution according to United States Pharmacopoeia (USP) is specified for use in individual United States Pharmacopoeia (USP) Monographs. It is tested by an ISO 17025 Accredited Test Method (A2LA Ref: 6739.03); is NIST traceable and has guaranteed stability throughout its entire shelf life; even after opening the bottle.

Reagecon's Edetate Disodium 0.1M is a fully factorised, high purity, stable product, developed and tested for titrations. This Analytical Volumetric Solution, also called titrant, standard titrant or standard solution, is tested to a specification of ± 0.2%. It is a reagent of known concentration, that is dispensed from a burette or other dispensing apparatus to a sample (analyte), until a reaction between the two liquids is judged to be complete. The product may be used for manual titrations, or more commonly automatic titrations, to determine the end points by detection of any of several properties as detailed in several USP monographs. - Titration is a rapid, economical and versatile analytical tool. This Reagecon titrant is accurate, stable, reproducible and fully factorised. Titrations performed with this product, exhibit defined stochiometry, are quantitative, establish an equilibrium that is definitive and fast and provide unambiguous results. Stability is proven (either opened or unopened) for the shelf life of this product.

Reagecon's Barium Nitrate TS Solution according to United States Pharmacopoeia (USP) is specified for use in individual United States Pharmacopoeia (USP) Monographs. It is tested by an ISO 17025 Accredited Test Method (A2LA Ref: 6739.03); is NIST traceable and has guaranteed stability throughout its entire shelf life; even after opening the bottle.

Reagecon's Lead Nitrate 0.01M is a fully factorised, high purity, stable product, developed and tested for titrations. This Analytical Volumetric Solution, also called titrant, standard titrant or standard solution, is tested to a specification of ± 0.2%. It is a reagent of known concentration, that is dispensed from a burette or other dispensing apparatus to a sample (analyte), until a reaction between the two liquids is judged to be complete. The product may be used for manual titrations, or more commonly automatic titrations, to determine the end points by detection of any of several properties as detailed in several USP monographs. - Titration is a rapid, economical and versatile analytical tool. This Reagecon titrant is accurate, stable, reproducible and fully factorised. Titrations performed with this product, exhibit defined stochiometry, are quantitative, establish an equilibrium that is definitive and fast and provide unambiguous results. Stability is proven (either opened or unopened) for the shelf life of this product.

Reagecon's Potassium Bromate 0.1N is a fully factorised, high purity, stable product, developed and tested for titrations. This Analytical Volumetric Solution, also called titrant, standard titrant or standard solution, is tested to a specification of ± 0.2%. It is a reagent of known concentration, that is dispensed from a burette or other dispensing apparatus to a sample (analyte), until a reaction between the two liquids is judged to be complete. The product may be used for manual titrations, or more commonly automatic titrations, to determine the end points by detection of any of several properties as detailed in several USP monographs. - Titration is a rapid, economical and versatile analytical tool. This Reagecon AVL is accurate, stable, reproducible and fully factorised. Titrations performed with this product, exhibit defined stoichiometry, are quantitative, establish an equilibrium that is definitive and fast and provide unambiguous results. Stability is proven (either opened or unopened) for the shelf life of this product.

Reagecon's Dichlorofluorescein TS Solution according to United States Pharmacopoeia (USP) is specified for use in individual United States Pharmacopoeia (USP) Monographs. It is tested by an ISO 17025 Accredited Test Method (A2LA Ref: 6739.03); is NIST traceable and has guaranteed stability throughout its entire shelf life; even after opening the bottle.

Reagecon's Nitric Acid Dilute Solution according to United States Pharmacopoeia (USP) is specified for use in individual United States Pharmacopoeia (USP) Monographs. It is tested by an ISO 17025 Accredited Test Method (A2LA Ref: 6739.03); is NIST traceable and has guaranteed stability throughout its entire shelf life; even after opening the bottle.

Reagecon's Matching Fluid O according to United States Pharmacopoeia (USP) is specified for use in individual United States Pharmacopoeia (USP) Monographs. Has guaranteed stability throughout its entire shelf life, even after opening the bottle.

Reagecon's Hydrochloric Acid Alcoholic 0.1M according to United States Pharmacopoeia (USP) is specified for use in individual United States Pharmacopoeia (USP) Monographs. It is tested by an ISO 17025 Accredited Test Method (A2LA Ref: 6739.03); is NIST traceable and has guaranteed stability throughout its entire shelf life; even after opening the bottle. - Titration is a rapid, economical and versatile analytical tool. This Reagecon titrant is accurate, stable, reproducible and fully factorised. Titrations performed with this product, exhibit defined stochiometry, are quantitative, establish an equilibrium that is definitive and fast and provide unambiguous results. Stability is proven (either opened or unopened) for the shelf life of this product.

Reagecon's Potassium Hydroxide 1N is a fully factorised, high purity, stable product, developed and tested for titrations. This Analytical Volumetric Solution, also called titrant, standard titrant or standard solution, is tested to a specification of ± 0.2%. It is a reagent of known concentration, that is dispensed from a burette or other dispensing apparatus to a sample (analyte), until a reaction between the two liquids is judged to be complete. The product may be used for manual titrations, or more commonly automatic titrations, to determine the end points by detection of any of several properties as detailed in several USP monographs. - Titration is a rapid, economical and versatile analytical tool. This Reagecon titrant is accurate, stable, reproducible and fully factorised. Titrations performed with this product, exhibit defined stochiometry, are quantitative, establish an equilibrium that is definitive and fast and provide unambiguous results. Stability is proven (either opened or unopened) for the shelf life of this product.

Reagecon's Potassium Iodide TS Solution according to United States Pharmacopoeia (USP) is specified for use in individual United States Pharmacopoeia (USP) Monographs. It is tested by an ISO 17025 Accredited Test Method (A2LA Ref: 6739.03); is NIST traceable and has guaranteed stability throughout its entire shelf life; even after opening the bottle.

Reagecon's Silver Nitrate 0.05N is a fully factorised, high purity, stable product, developed and tested for titrations. This Analytical Volumetric Solution, also called titrant, standard titrant or standard solution, is tested to a specification of ± 0.2%. It is a reagent of known concentration, that is dispensed from a burette or other dispensing apparatus to a sample (analyte), until a reaction between the two liquids is judged to be complete. The product may be used for manual titrations, or more commonly automatic titrations, to determine the end points by detection of any of several properties as detailed in several USP monographs. - Titration is a rapid, economical and versatile analytical tool. This Reagecon titrant is accurate, stable, reproducible and fully factorised. Titrations performed with this product, exhibit defined stochiometry, are quantitative, establish an equilibrium that is definitive and fast and provide unambiguous results. Stability is proven (either opened or unopened) for the shelf life of this product.

Reagecon's Sulfanilic Acid TS Solution according to United States Pharmacopoeia (USP) is specified for use in individual United States Pharmacopoeia (USP) Monographs. It is tested by an ISO 17025 Accredited Test Method (A2LA Ref: 6739.03); is NIST traceable and has guaranteed stability throughout its entire shelf life; even after opening the bottle.

Reagecon's Methyl Red TS 2 Solution is a high quality Indicator Solution produced from the highest quality raw materials and manufactured and tested under rigorous conditions. For manual titrations; indicator, titrant or analyte change colour and this colour change is by far the most important method of end point detection, in such titrations. A high quality indicator solution such as Reagecon's’s facilitates end point detection, in a clear and unambiguous manner and is an imperative for accurate manual titrimetry.

Reagecon's Potassium Dichromate 0.1N is a fully factorised, high purity, stable product, developed and tested for titrations. This Analytical Volumetric Solution, also called titrant, standard titrant or standard solution, is tested to a specification of ± 0.2%. It is a reagent of known concentration, that is dispensed from a burette or other dispensing apparatus to a sample (analyte), until a reaction between the two liquids is judged to be complete. The product may be used for manual titrations, or more commonly automatic titrations, to determine the end points by detection of any of several properties as detailed in several USP monographs. - Titration is a rapid, economical and versatile analytical tool. This Reagecon titrant is accurate, stable, reproducible and fully factorised. Titrations performed with this product, exhibit defined stochiometry, are quantitative, establish an equilibrium that is definitive and fast and provide unambiguous results. Stability is proven (either opened or unopened) for the shelf life of this product.

Reagecon's Methyl Orange Indicator Solution is a high quality Indicator Solution produced from the highest quality raw materials and manufactured and tested under rigorous conditions. For manual titrations; indicator, titrant or analyte change colour and this colour change is by far the most important method of end point detection, in such titrations. A high quality indicator solution such as Reagecon's’s facilitates end point detection, in a clear and unambiguous manner and is an imperative for accurate manual titrimetry.

Reagecon's Potassium Hydroxide Alcoholic 0.1M according to United States Pharmacopoeia (USP) is specified for use in individual United States Pharmacopoeia (USP) Monographs. It is tested by an ISO 17025 Accredited Test Method (A2LA Ref: 6739.03); is NIST traceable and has guaranteed stability throughout its entire shelf life; even after opening the bottle. - Titration is a rapid, economical and versatile analytical tool. This Reagecon titrant is accurate, stable, reproducible and fully factorised. Titrations performed with this product, exhibit defined stochiometry, are quantitative, establish an equilibrium that is definitive and fast and provide unambiguous results. Stability is proven (either opened or unopened) for the shelf life of this product.

Reagecon's pH 5.5 Monobasic/Dibasic Potassium Phosphate Buffered Eluent is tested, is NIST traceable and has guaranteed stability throughout its entire shelf life, even after opening the bottle. The product is developed, formulated and specified in accordance with United States Pharmacopoeia (USP) requirements.

Reagecon's Perchloric Acid TS is manufactured according to the United States Pharmacopoeia (USP) and is specified for use in individual USP Monographs. It is a fully factorised, high purity, stable product, developed and tested for titrations. The product may be used for manual titrations, or more commonly automatic titrations, to determine the end points by detection of any of several properties as detailed in several USP monographs. - Titration is a rapid, economical and versatile analytical tool. This Reagecon titrant is accurate, stable, reproducible and fully factorised. Titrations performed with this product, exhibit defined stochiometry, are quantitative, establish an equilibrium that is definitive and fast and provide unambiguous results. Stability is proven (either opened or unopened) for the shelf life of this product.

Reagecon's Sodium Chloride Solution according to United States Pharmacopoeia (USP) is specified for use in individual United States Pharmacopoeia (USP) Monographs. It is tested by an ISO 17025 Accredited Test Method (A2LA Ref: 6739.03); is NIST traceable and has guaranteed stability throughout its entire shelf life; even after opening the bottle.

Reagecon's Edetate Disodium 0.05M is a fully factorised, high purity, stable product, developed and tested for titrations. This Analytical Volumetric Solution, also called titrant, standard titrant or standard solution, is tested to a specification of ± 0.2%. It is a reagent of known concentration, that is dispensed from a burette or other dispensing apparatus to a sample (analyte), until a reaction between the two liquids is judged to be complete. The product may be used for manual titrations, or more commonly automatic titrations, to determine the end points by detection of any of several properties as detailed in several USP monographs. - Titration is a rapid, economical and versatile analytical tool. This Reagecon titrant is accurate, stable, reproducible and fully factorised. Titrations performed with this product, exhibit defined stochiometry, are quantitative, establish an equilibrium that is definitive and fast and provide unambiguous results. Stability is proven (either opened or unopened) for the shelf life of this product.

Reagecon's Ferric Chloride TS Solution according to United States Pharmacopoeia (USP) is specified for use in individual United States Pharmacopoeia (USP) Monographs. It is tested by an ISO 17025 Accredited Test Method (A2LA Ref: 6739.03); is NIST traceable and has guaranteed stability throughout its entire shelf life; even after opening the bottle.

Reagecon's pH 6.5 Monobasic Potassium Phosphate Buffered Eluent is tested, is NIST traceable and has guaranteed stability throughout its entire shelf life, even after opening the bottle. The product is developed, formulated and specified in accordance with United States Pharmacopoeia (USP) requirements.

Reagecon's Ammoniacal Potassium Ferricyanide TS Solution according to United States Pharmacopoeia (USP) is specified for use in individual United States Pharmacopoeia (USP) Monographs. It is tested by an ISO 17025 Accredited Test Method (A2LA Ref: 6739.03); is NIST traceable and has guaranteed stability throughout its entire shelf life; even after opening the bottle.

Reagecon's Sulfuric Acid 1.00N is a fully factorised, high purity, stable product, developed and tested for titrations. This Analytical Volumetric Solution, also called titrant, standard titrant or standard solution, is tested to a specification of ± 0.2%. It is a reagent of known concentration, that is dispensed from a burette or other dispensing apparatus to a sample (analyte), until a reaction between the two liquids is judged to be complete. The product may be used for manual titrations, or more commonly automatic titrations, to determine the end points by detection of any of several properties as detailed in several USP monographs. - Titration is a rapid, economical and versatile analytical tool. This Reagecon titrant is accurate, stable, reproducible and fully factorised. Titrations performed with this product, exhibit defined stochiometry, are quantitative, establish an equilibrium that is definitive and fast and provide unambiguous results. Stability is proven (either opened or unopened) for the shelf life of this product.

Reagecon's Ammonium Chloride TS Solution according to United States Pharmacopoeia (USP) is specified for use in individual United States Pharmacopoeia (USP) Monographs. It is tested by an ISO 17025 Accredited Test Method (A2LA Ref: 6739.03); is NIST traceable and has guaranteed stability throughout its entire shelf life; even after opening the bottle.

Reagecon's Zinc Sulphate 0.1M is a fully factorised, high purity, stable product, developed and tested for titrations. This Analytical Volumetric Solution, also called titrant, standard titrant or standard solution, is tested to a specification of ± 0.2%. It is a reagent of known concentration, that is dispensed from a burette or other dispensing apparatus to a sample (analyte), until a reaction between the two liquids is judged to be complete. The product may be used for manual titrations, or more commonly automatic titrations, to determine the end points by detection of any of several properties as detailed in several USP monographs. - Titration is a rapid, economical and versatile analytical tool. This Reagecon titrant is accurate, stable, reproducible and fully factorised. Titrations performed with this product, exhibit defined stochiometry, are quantitative, establish an equilibrium that is definitive and fast and provide unambiguous results. Stability is proven (either opened or unopened) for the shelf life of this product.

Reagecon's Mercuric Chloride TS Solution according to United States Pharmacopoeia (USP) is specified for use in individual United States Pharmacopoeia (USP) Monographs. It is tested by an ISO 17025 Accredited Test Method (A2LA Ref: 6739.03); is NIST traceable and has guaranteed stability throughout its entire shelf life; even after opening the bottle.

Reagecon's Potassium Permanganate 0.100N is a fully factorised, high purity, stable product, developed and tested for titrations. This Analytical Volumetric Solution, also called titrant, standard titrant or standard solution, is tested to a specification of ± 0.2%. It is a reagent of known concentration, that is dispensed from a burette or other dispensing apparatus to a sample (analyte), until a reaction between the two liquids is judged to be complete. The product may be used for manual titrations, or more commonly automatic titrations, to determine the end points by detection of any of several properties as detailed in several USP monographs. - Titration is a rapid, economical and versatile analytical tool. This Reagecon titrant is accurate, stable, reproducible and fully factorised. Titrations performed with this product, exhibit defined stochiometry, are quantitative, establish an equilibrium that is definitive and fast and provide unambiguous results. Stability is proven (either opened or unopened) for the shelf life of this product.

Reagecon's pH 6.8 Monobasic Potassium Phosphate/Dibasic Sodium Phosphate Buffered Eluent is tested, is NIST traceable and has guaranteed stability throughout its entire shelf life, even after opening the bottle. The product is developed, formulated and specified in accordance with United States Pharmacopoeia (USP) requirements.

Reagecon's Ammonium Ferric Sulfate 8% according to United States Pharmacopoeia (USP) is specified for use in individual United States Pharmacopoeia (USP) Monographs. Has guaranteed stability throughout its entire shelf life, even after opening the bottle.

Reagecon's Stock Solution to make Arsenic Trioxide according to United States Pharmacopoeia (USP) is specified for use in individual United States Pharmacopoeia (USP) Monographs. It is tested by an ISO 17025 Accredited Test Method (A2LA Ref: 6739.03); is NIST traceable and has guaranteed stability throughout its entire shelf life; even after opening the bottle.

Reagecon's Matching Fluid D according to United States Pharmacopoeia (USP) is specified for use in individual United States Pharmacopoeia (USP) Monographs. Has guaranteed stability throughout its entire shelf life, even after opening the bottle.

Reagecon's Potassium Carbonate TS Solution according to United States Pharmacopoeia (USP) is specified for use in individual United States Pharmacopoeia (USP) Monographs. It is tested by an ISO 17025 Accredited Test Method (A2LA Ref: 6739.03); is NIST traceable and has guaranteed stability throughout its entire shelf life; even after opening the bottle.

Reagecon's Ammonium Chloride TS Solution according to United States Pharmacopoeia (USP) is specified for use in individual United States Pharmacopoeia (USP) Monographs. It is tested by an ISO 17025 Accredited Test Method (A2LA Ref: 6739.03); is NIST traceable and has guaranteed stability throughout its entire shelf life; even after opening the bottle.

Reagecon's Ammonium Carbonate TS Solution according to United States Pharmacopoeia (USP) is specified for use in individual United States Pharmacopoeia (USP) Monographs. It is tested by an ISO 17025 Accredited Test Method (A2LA Ref: 6739.03); is NIST traceable and has guaranteed stability throughout its entire shelf life; even after opening the bottle.

Reagecon's Ferric Chloride TS Solution according to United States Pharmacopoeia (USP) is specified for use in individual United States Pharmacopoeia (USP) Monographs. It is tested by an ISO 17025 Accredited Test Method (A2LA Ref: 6739.03); is NIST traceable and has guaranteed stability throughout its entire shelf life; even after opening the bottle.