You searched for: Standards
Meeting regulations in any industry, standards are essential for periodically checking the accuracy of equipment pieces. By comparing against the known values, output readings detect errors present and inform personnel adjustments are required. Once the settings of the manual or automatic instruments have returned to zero, the reestablished conditions will yield optimal working performance. Calibrating with concentrated standards eliminates the possibility that environmental changes will induce instrumental miscalculation when accuracy matters most.
Simple nutrients, (CRM), Supelco®
Supplier: Merck
Simple Nutrients, Supelco®, Certified reference material, : N/A
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Reference standards, surface water - trace metals
Supplier: PROMOCHEM
This reference standard is intended for daily use in conjunction with measurement of elements in surface waters. The water solution contains 45 elements with concentrations traceable to
ultrapure metals or stoichiometrically well-defined substances.
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Inorganic disinfection by-product kit, (CRM), Supelco®
Supplier: Merck
INORGANIC DISINFECTION BY-PRODUCTS KIT -, Supelco®, : N/A
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Low level mercury in soil, (CRM), Supelco®
Supplier: Merck
Low Level Mercury in Soil, Supelco®, : N/A
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BNAs - Sandy Loams1, (CRM), Supelco®
Supplier: Merck
BNAs - Sandy Loam 1, Supelco®, : N/A, Pkg of 50 g
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Demand - constant value, (CRM), Supelco®
Supplier: Merck
Demand - Constant Value, Supelco®, Certified reference material, : N/A
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Solids in soil - PT, proficiency testing material, Supelco®
Supplier: Merck
Solids in Soil - PT, Supelco®, Proficiency Testing Material, : N/A
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Cyanide Total - WS, proficiency testing material, Supelco®
Supplier: Merck
Cyanide Total - WS, Supelco®, Proficiency Testing Material, : N/A
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Residual Free Chlorine (RFC), (CRM), Supelco®
Supplier: Merck
Residual Free Chlorine (RFC), Supelco®, Certified reference material
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TCLP Metals - Loam 1, (CRM), Supelco®
Supplier: Merck
TCLP Metals - Loam 1, Supelco®, Certified reference material, : N/A, Pkg of 225 g
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TPH in Soil - Low - PT, Proficiency Testing Material, Supelco®
Supplier: Merck
TPH in Soil - Low - PT, Supelco®, Proficiency Testing Material, : N/A
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Diesel - Clay Loam 1, (CRM), Supelco®
Supplier: Merck
Diesel - Clay Loam 1, Supelco®, Certified reference material, : N/A, Pkg of 100 g
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Lead free paint - powdered, (CRM), Supelco®
Supplier: Merck
Lead Free Paint - Powdered, Supelco®, Certified reference material, : N/A, Pkg of 20 g
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EPA 8270 Phenols mix, certified reference material, Supelco®
Supplier: Merck
EPA 8270 Phenols Mix, Supelco®, Certified reference material, 2000 mug/mL each component in isopropanol, : N/A
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EPA 525 PAH mix B, certified reference material, Supelco®
Supplier: Merck
EPA 525 PAH Mix B, Supelco®, Certified reference material, 500 mug/mL each component in acetone, : N/A
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Conductivity PT, Proficiency Testing Material, Supelco®
Supplier: Merck
Conductivity PT, Proficiency Testing Material
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Intermediate polar column test mix, certified reference material, Supelco®
Supplier: Merck
Intermediate Polar Column Test Mix, TraceCERT®, Supelco®, 500 mug/mL in dichloromethane, Certified reference material, Pk Info: ampule of 2 mL
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ASTM® D5441 MTBE contaminants (high) mix A, certified reference material, Supelco®
Supplier: Merck
ASTM(R) D5441 MTBE Contaminants (high) Mix A, Supelco®, 1 % (w/w) each component in methyl tert-butyl ether
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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, : N/A
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Sheepshead minnow (Cyprinodon variegatus), Proficiency Testing Material, Supelco®
Supplier: Merck
Sheepshead minnow (Cyprinodon variegatus), 7-day Chronic, daily renewal, SSW
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Ceriodaphnia dubia, proficiency testing material, Supelco®
Supplier: Merck
Ceriodaphnia dubia, 3-Brood Chronic, daily renewal, MHSF, Proficiency Testing Material
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Polystyrene film - IR transmission wavelength standards, NIST-1921B
Supplier: PROMOCHEM
NIST-1921B, Polystyrene film - IR transmission wavelength
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VOAs in soil 1 - low level, Supelco®
Supplier: Merck
VOAs in soil 1 - low level, Supelco®, : N/A
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Complete Volatiles Kit - WP, Supelco®
Supplier: Merck
Complete Volatiles Kit - WP, Supelco®, : N/A
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Phenols - PT, proficiency testing material, Supelco®
Supplier: Merck
Phenols - PT, Supelco®, Proficiency Testing Material, : N/A
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Bomb/halogen QCS, (CRM), Supelco®
Supplier: Merck
Bomb/Halogen QCS, Supelco®, : N/A
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Sand - pH 2.80, (CRM), Supelco®
Supplier: Merck
Sand - pH 2.80, Supelco®, : N/A
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Nitrosamines/nitroaromatics - WP, (CRM), Supelco®
Supplier: Merck
Nitrosamines/Nitroaromatics - WP, Supelco®, Certified reference material, : N/A
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Toxaphene in Soil - PT, Proficiency Testing Material, Supelco®
Supplier: Merck
Toxaphene in Soil - PT, Supelco®, Proficiency Testing Material, : N/A
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Lead on filter paper, proficiency testing material, Supelco®
Supplier: Merck
Lead on Filter Paper, Supelco®, Proficiency Testing Material, : N/A