You searched 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

« ‹ 10 11 12 › »

Salinity - WP, Proficiency Testing Material, Supelco®

Supplier: Merck

Salinity - WP, Supelco®, Proficiency Testing Material, : N/A

Expand 1 Items

Acidity (as CaCO₃), concentrate, (CRM), Supelco®

Supplier: Merck

Acidity (as CaCO3), concentrate, Supelco®, Certified reference material

Expand 1 Items

Minerals - whole volume, (CRM), Supelco®

Supplier: Merck

Minerals - Whole Volume, Supelco®, Certified reference material, : N/A

Expand 1 Items

Trace Metals (Dissolved) - 2, (CRM), Supelco®

Supplier: Merck

Trace Metals (Dissolved) - 2, Supelco®, Certified reference material, : N/A

Expand 1 Items

Anions on Filter Paper, Proficiency Testing Material, Supelco®

Supplier: Merck

Anions on Filter Paper, Supelco®, Proficiency Testing Material

Expand 1 Items

Metals in impinger solution, proficiency testing material, Supelco®

Supplier: Merck

Metals in Impinger Solution, Supelco®, Proficiency Testing Material

Expand 1 Items

EPA 552.2 acids calibration mix, certified reference material, Supelco®

Supplier: Merck

EPA 552.2 Acids Calibration Mix, Supelco®, Certified reference material, in methyl tert-butyl ether (varied)

Expand 1 Items

Trace metals - taiwan clays, (CRM), Supelco®

Supplier: Merck

Trace Metals - Taiwan Clay 1, Supelco®, Pkg of 50 g

Expand 2 Items

Sulfide in Soil - PT, Proficiency Testing Material, Supelco®

Supplier: Merck

Sulfide in Soil - PT, Supelco®, Proficiency Testing Material, : N/A

Expand 1 Items

Hardness/TSS - Whole Volume, (CRM), Supelco®

Supplier: Merck

Hardness/TSS - Whole Volume, Supelco®, Certified reference material, : N/A

Expand 1 Items

Residual Chlorine - Constant Value, (CRM), Supelco®

Supplier: Merck

Residual Chlorine - Constant Value, Supelco®, Certified reference material, : N/A

Expand 1 Items

Nitrogen oxide in impinger solution, proficiency testing material, Supelco®

Supplier: Merck

Nitrogen Oxide in Impinger Solution, Supelco®, Proficiency Testing Material

Expand 1 Items

EPA 8270 GC-MS tuning solution, certified reference material, Supelco®

Supplier: Merck

EPA 8270 GC-MS Tuning Solution, Supelco®, Certified reference material, 50 mug/mL each component in dichloromethane

Expand 1 Items

UV254 - Whole Volume - WS, Proficiency Testing Material, Supelco®

Supplier: Merck

UV254 - Whole Volume - WS, Supelco®, Proficiency Testing Material, : N/A

Expand 1 Items

ISO 17943 57 Component VOC mix, (CRM), Supelco®

Supplier: Merck

ISO 17943 57 Component VOC Mix, Supelco®, Certified reference material, 200 µg/ml each component in methanol

Expand 1 Items

EPA 8270 base/neutrals surrogate spike mix HC, certified reference material, Supelco®

Supplier: Merck

EPA 8270 Base/Neutrals Surrogate Spike Mix HC, Supelco®, Certified reference material, 5000 mug/mL each component in dichloromethane

Expand 1 Items

Residual Free Chlorine (RFC) - WS, Proficiency Testing Material, Supelco®

Supplier: Merck

Residual Free Chlorine (RFC) - WS, Supelco®, Proficiency Testing Material, : N/A

Expand 1 Items

Organophosphorus pesticides Mix A, certified reference material, Supelco®

Supplier: Merck

Organophosphorus Pesticides Mix A, Supelco®, Certified reference material, 2000 mug/mL each component in hexane: acetone (9:1)

Expand 1 Items

EPA TCL Pesticides mix, certified reference material, Supelco®

Supplier: Merck

EPA TCL Pesticides Mix, Supelco®, Certified reference material, 2000 mug/mL each component in hexane: toluene (1:1)

Expand 1 Items

EPA 608 pesticides mix, certified reference material, Supelco®

Supplier: Merck

EPA 608 Pesticides Mix, Supelco®, Certified reference material, 20 mug/mL each component in hexane: toluene (1:1)

Expand 1 Items

EPA 8260 volatiles calibration mix, certified reference material, Supelco®

Supplier: Merck

EPA 8260 Volatiles Calibration Mix, Supelco®, Certified reference material, 2000 mug/mL each component in methanol

Expand 1 Items

NIST® SRM® Trace Elements in Water

Supplier: Merck

Each unit of SRM 1643F consists of a polyethylene bottle containing ~250 ml of acidified water, sealed within an aluminized plastic bag to maintain stability. The SRM simulates the elemental composition of fresh water. The solution contains nitric acid at a volume fraction of ~2%, equivalent to an amount of substance concentration (molarity) of nearly 0,32 mol/L.