354 results for Environmental Analysis Standards

The environmental analysis standards confirm testing instruments remain consistent for pollutant level monitoring. Single or multi-element solutions can be used to compare and check composition determinations of unknown samples. Accurately assessing threats in the atmosphere, water sources, or soil, personnel can modify and improve conditions to reestablish the surroundings required for optimal performance. Identify all external and internal elements which impact overall growth with the environmental analysis standards.

Sort By

« ‹ 8 9 10 › »

Certified Reference Materials for environmental analysis

Supplier: VKI WATER QUALITY INSTITUTE

Certified Reference Materials (CRMs), produced by VKI, are designed to provide appropriate homogenous stable reference materials for quality control of environmental analyses. Certification is carried out in accordance with ISO Guide 30, 31, 33, 34, 35, ISO 5725 and ISO/REMCO N 37. All CRMs are traceable to a National Standard, or verified by a group of internationally recognised laboratories, and come with a Certificate of Analysis which states the certified value and the uncertainty at a stated level of confidence.

Expand 33 Items

COD calibration standard solutions (NIST traceable)

Supplier: Hach

COD standard solution (NIST), 1000 mg/l

Expand 4 Items

Silica standard solution

Supplier: Hach

Standard solutions for accuracy checks in silica determinations.

Expand 6 Items

Cobalt standard solution

Supplier: Hach

Standard solution for accuracy checks in cobalt determinations.

Expand 1 Items

Standard solution, phosphate, 500 mg/L as PO4 (NIST), pk/16 - 10-mL voluette® ampules

Supplier: Hach

For accuracy checks in phosphate (phosphorus) determinations

Expand 1 Items

Hardness standard solution, APA6000

Supplier: Hach

Hardness standard solution, 0,50 mg/l as CaCO₃ traceable to NIST.

Expand 1 Items

Nitrogen-nitrate standard solution

Supplier: Hach

Standard solutions for accuracy checks in nitrate nitrogen determinations and also for meter calibrations/standardisation.

Expand 4 Items

SpecCheck secondary gel standards sets

Supplier: Hach

SpecCheck secondary gel standards sets, 0 - 2 mg/l F₂, For test kit(s): Fluoride, 4 Vials

Expand 5 Items

Sulfate standard solution

Supplier: Hach

Standard solution for accuracy checks in sulfate determinations.

Expand 4 Items

Standards for the ammonia and monochloramine analyser, APA6000

Supplier: Hach

These are used as part of the standard kit for both APA 6000 ammonia and ammonia/monochloramine analyser instruments.

Expand 2 Items

Chlorine standard solution

Supplier: Hach

For accuracy checks in chlorine determinations. Lot specific concentration displayed on label.

Expand 3 Items

Reference standard kits for use with MD 100 and MD 200 photometers

Supplier: Lovibond

Reference standards are designed to check the accuracy and the reliability of the results.

Expand 10 Items

Wastewater inorganics quality control standard

Supplier: Hach

These mixed standards are ready to use, no dilutions are required. They contain ammonia nitrogen, nitrate nitrogen, COD, phosphate, sulphate and TOC.

Expand 2 Items

Phosphorus standard solution

Supplier: Hach

Standard solution for accuracy checks in phosphorus determinations.

Expand 2 Items

Solution, cobalt chloride, for spectrophotometer

Supplier: Hach

Cobalt chloride solution for spectrophotometer linearisation.

Expand 1 Items

Phosphate standard solutions

Supplier: Hach

Standard solution for accuracy checks in phosphate (phosphorus) determinations.

Expand 8 Items

Potassium iodide-iodate standard solution, 0,0125 N

Supplier: Hach

Used for determination of sulphite by burette iodometric titration.

Expand 1 Items

Sulphite standard solution

Supplier: Hach

This equivalent standard is prepared with stabilised sodium thiosulfate, since sulphite is not a stable in solution.

Expand 2 Items

Quaternary ammonium compound (QAC) standard solution

Supplier: Hach

For accuracy checks in quaternary ammonium compound (QAC) determinations.

Expand 1 Items

Carbon dioxide standard solution

Supplier: Hach

Standard solution for accuracy checks in carbon dioxide determinations (Potassium hydrogen phthalate solution).

Expand 1 Items

Metals quality control standard for drinking water

Supplier: Hach

These mixed standards are ready to use with no dilutions required. It include standards for determination of copper, iron and manganese.

Expand 2 Items

Hardness quality control standard

Supplier: Hach

These mixed standards are ready to use with no dilutions required. Includes standards for both total hardness and calcium hardness determination.

Expand 2 Items

Dissolved oxygen standard solution

Supplier: Hach

Iodate-Iodide standard solution, 0.00125 N equivalent 10 mg/L DO

Expand 1 Items

Copper standard solution

Supplier: Hach

Standard solution for accuracy checks in copper determinations.

Expand 1 Items

Iron standard solution

Supplier: Hach

For accuracy checks in iron determinations.

Expand 5 Items

Magnesium standard solution

Supplier: Hach

Standard solutions for accuracy checks in magnesium determinations. HNO₃ matrix.

Expand 1 Items

ISE standards

Supplier: Hach

ISE standards are used to calibrate ion selective electrode measurement systems by coresponding the electrode output with the concentration of the analyte. Pairs of standards with concentrations that differ by a factor of ten are used for analysis.