Padrões físico-químicos

This highly accurate 5000 ppm Chemical Oxygen Demand (COD) Calibration Standard, can be used to calibrate, control, verify or validate all COD Test Methods. The product yields an accurate test result of 5000 ppm. Achieving this correct result increases significantly the confidence of the analyst in the correct COD reading of the sample. - Reagecon’s COD Standards are ideal for use as Control Standards to verify that correct analysis for COD has taken place. Achieving an acceptable result for the Control Standard will improve confidence in sample readings for this important environmental parameter. - Used as a Control Standard; or for Validation or Qualification. - Directly traceable to NIST standard reference materials. - Run Control with each set of samples. - Prepare and analyse in exactly the same way as samples. - Manufactured to exacting specifications with an extended shelf life and stability. - Proven compliance with EPA. - Compatible with any instrument.

Reagecon’s Total Base Number (TBN) Titration Solvent 2:1 Chlorobenzene and Glacial Acetic Acid for ASTM D2896 is used by dissolving the sample in this solution and titrating potentiometrically with a solution of perchloric acid in glacial acetic acid. The test method is used for both new and used petroleum products that may contain basic constituents that may be present as additives. The test may also be used as a measure of lubricant degradation, but any condemning limits based on the test must be established on an individual basis.

This Reagecon Density Standard Quality Range 0.7488 g/mL at 20°C is manufactured and tested in accordance with ASTM D4052 for testing of density or relative density (specific and API gravity). It is tested by vibrational densitometer and can be used as a calibration or control standard for density measurement by vibrational or hydrometer (specific gravity) based techniques. - The Test Method used by Reagecon for testing density standards using vibrational densitometers is accredited to ISO 17025 (A2LA Ref: 6739.03). The product is prepared gravimetrically on a weight/weight basis. Both solute and solvent are weighed on a balance calibrated by OIML traceable weights. Reagecon holds ISO 17025 accreditation (A2LA Ref: 6739.02) for calibration of laboratory balances. The density of the product is established and tested using high performance calibrated vibrational densitometers. - High accuracy ± 0.16%

Reagecon's pH Buffer Solution at 25°C is tested by an ISO 17025 Accredited Test Method (A2LA Ref: 6739.03) and NIST traceable; has guaranteed stability throughout its entire shelf life; even after opening the bottle. The product is developed; formulated and specified in accordance with EP requirements. - NIST traceable

Reagecon's Sodium Hydroxide 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 EP monographs. - NIST traceable - 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.

Pricing displayed is Nett. For order quantities above 4 units, ask your sales contact for a quotation. Reagecon's Ion Chromatography (IC) Multi Element Cation Standard (9 Elements) in H₂O and trace HNO₃ is manufactured from ultra-pure salts. This product is manufactured gravimetrically. Prior to bottling; the final product is tested and verified using a state of the art ion chromatograph and is reported using the gravimetric result; corrected for density. The results are reported in mg/kg and mg/L on the basis of weight and density. Reagecon hold ISO 17025 accreditation (A2LA Ref: 6739.02) for calibration of laboratory balances. - GHS/OSHA compliant, REACH - This product is produced in a highly controlled cleanroom (ISO 7) environment; using ultra-pure water (specially treated for the production of ion chromatography standards) and triple leached pre-cleaned bottles. All of the uncertainties of measurement for the product are calculated according to Eurachem/CITAC guidelines and reported as expanded uncertainties at the 95% confidence level. Description | Concentration: - Ammonium (NH₄): 100 µg/mL (ppm). - Barium (Ba): 100 µg/mL (ppm). - Calcium (Ca): 100 µg/mL (ppm). - Potassium (K): 100 µg/mL (ppm). - Lithium (Li): 100 µg/mL (ppm). - Sodium (Na): 100 µg/mL (ppm). - Magnesium (Mg): 100 µg/mL (ppm). - Manganese (Mn): 100 µg/mL (ppm). - Strontium (Sr): 100 µg/mL (ppm).

Reagecon's pH Buffer Solution at 25°C is tested by an ISO 17025 Accredited Test Method (A2LA Ref: 6739.03) and NIST traceable; has guaranteed stability throughout its entire shelf life; even after opening the bottle. The product is developed; formulated and specified in accordance with EP requirements. - NIST traceable

Reagecon's Methyl Orange Indicator 0.1% 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 Methyl Orange Indicator 0.1% Solution facilitates end point detection, in a clear and unambiguous manner and is an imperative for accurate manual titrimetry.

Reagecon 2000 NTU Ratio Turbidity Standard is a suspension of polymer microspheres. The product has guaranteed stability throughout its entire shelf life; even after opening the bottle. - Reagecon’s Turbidity Standards for ratio instruments are composed of suspended polymer microspheres; with well defined spherical shape. - Designed and formulated to overcome the adverse safety; accuracy and stability issues experienced with Formazin Turbidity Standards. - Traceable to NIST standard reference materials. - Manufactured to exacting specifications with an extended shelf life and stability; even after opening the bottle. - US EPA approved for drinking water turbidity. - Non-toxic and non-carcinogenic. - Reagecon also offers a range of Stabilised Formazin Turbidity Standards which are marketed under the Turbiform™ brand See More …

This Reagecon's 440 mV (± 5mV) Standard acts as a Control or Reference Material. This is because Redox Oxidation/Reduction (ORP) is an absolute measurement and the sensing electrode does not require calibration. This Standard verifies the functionality of the sensing and reference electrode; the analysts technique; environmental conditions and the operation of the measuring meter. The value of 400 mV quoted refers to the potentials of the platinum electrode v Ag/AgCl reference electrode. - Reagecon produces a complete range of high-quality Redox Standards for the control; validation or qualification of Redox measurement. - Very high specification (± 5mV). - Manufactured to exacting specifications with an extended shelf life and stability; even after opening the bottle. - All products are tested with proven verifiable accuracy and fully budgeted uncertainty of measurement.

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 Sodium Hydroxide 0.1M (0.1N) Analytical Volumetric Solution (AVL) is tested by an ISO 17025 Accredited Test Method (A2LA Ref: 6739.03). This product is a fully factorised; high purity; stable product; developed and tested for acid/base titrations. This Analytical Volumetric Solution; also called titrant; standard titrant or standard solution; is tested to a specification of ± 0.1%. 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. Acid/base titrations; also called neutralisation titrations; are used to determine either the amount of acid/base in a sample or the substance that can be converted to an acid/base. - 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 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 Diphenylamine R1 Solution is a high purity stable product developed and tested for European Pharmacopoeia (EP) applications.  These include the preparation of other reagents (4.1.1) and used as a reagent in the performance of tests outlined in several EP monographs. - This Reagecon EP reagent is accurate, stable and reproducible. Stability is proven (either opened or unopened) for the shelf life of this product.

Reagecon’s Carbon Dioxide (CO₂) Release Agent is used as an acidic CO₂ release agent during the measurement of CO₂ using the Corning 965D Carbon Dioxide Analyser. Use of this instrument is one of a number of approved techniques available for the determination of CO₂, in beer and other carbonated beverages. This instrument was subsequently marketed by Mettler Toledo as the model M965D CO₂ Analyser. - This product is produced using raw materials of a very high purity and specification. The product is tested using Reagecon Test Method TPATA and the result expressed in Molar Acidity, specification 2.0 – 2.2M acidity. A Certificate of Conformity is issued with each batch.

Reagecon's Chemical Oxygen Demand (COD) vials 0-15,000 mg/l can be used in conjunction with the Hach®, Aqualytic PC Spectro® and Aqualytic PC Compact Vario® Spectrophotometers that accept 16mm vials. - Ready to use in 16mm diameter vials. - Compatible with all dedicated spectrophotometer brands. - Use in the same way as instrument manufacturer’s vials. - See More on Reagecon's Chemical Oxygen Demand (COD) Vials COD Vials - Product Instruction-Information Sheet - It is considered best practice to always include a COD control standard when testing samples, with the value of the control standard close to the expected COD value for your samples. Reagecon supply a wide range of Chemical Oxygen Demand (COD) Standards which can be used for this purpose.

Pricing displayed is Nett. For order quantities above 4 units, ask your sales contact for a quotation. Reagecon’s Multi Element Standards for ICP; ICP-MS in 2-5% HNO₃ is manufactured from ultra-pure metals or salts. This product is manufactured gravimetrically using the mass balance approach: 100% less the sum of all impurities (w/w). Prior to bottling; the final product is tested and verified using ICP-MS and is reported using the gravimetric result; corrected for density. The results are reported in mg/kg and mg/L on the basis of weight and density. Reagecon hold ISO 17025 (A2LA Ref: 6739.02) accreditation for calibration of laboratory balances. - GHS/OSHA compliant, REACH - This product is produced in a highly controlled cleanroom (ISO 7) environment, using ultra-pure water (specially treated for the production of mass spectroscopy standards), triple distilled acids and triple leached pre-cleaned bottles. The titrimetry and spectroscopy are controlled and calibrated using separate standards, so the product comes with two layers of traceability including NIST Standards, where available. All of the uncertainties of measurement for this product are calculated according to Eurachem/CITAC guidelines and reported as expanded uncertainties at the 95% confidence level. Description | Concentration: - Silver (Ag): 100 µg/mL (ppm). - Aluminium (Al): 100 µg/mL (ppm). - Arsenic (As): 100 µg/mL (ppm). - Barium (Ba): 100 µg/mL (ppm). - Beryllium (Be): 100 µg/mL (ppm). - Cadmium (Cd): 100 µg/mL (ppm). - Cobalt (Co): 100 µg/mL (ppm). - Chromium (Cr): 100 µg/mL (ppm). - Copper (Cu): 100 µg/mL (ppm). - Manganese (Mn): 100 µg/mL (ppm). - Nickel (Ni): 100 µg/mL (ppm). - Lead (Pb): 100 µg/mL (ppm). - Selenium (Se): 100 µg/mL (ppm). - Thorium (Th): 100 µg/mL (ppm). - Thallium (Tl): 100 µg/mL (ppm). - Uranium (U): 100 µg/mL (ppm). - Vanadium (V): 100 µg/mL (ppm).

Reagecon's Sodium Hydroxide 0.1M (0.1N) Low in Carbonate Analytical Volumetric Solution (AVL) is tested by an ISO 17025 Accredited Test Method (A2LA Ref: 6739.03). This product is a fully factorised; high purity; stable product; developed and tested for acid/base titrations. This Analytical Volumetric Solution; also called titrant; standard titrant or standard solution; is tested to a specification of ± 0.1%. 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. Acid/base titrations; also called neutralisation titrations; are used to determine either the amount of acid/base in a sample or the substance that can be converted to an acid/base. - 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 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 pH Buffer Solution at 20°C is tested by our ISO 17025 Accredited Test Method (A2LA Ref: 6739.03) and NIST traceable.

Reagecon's pH Buffer Solution at 38°C is tested and NIST traceable.