You searched for: Environmental Analysis Standards

Supplier: VWR Chemicals

Potassium hydrogen phthalate solutions.

Supplier: VWR Chemicals

Standard solution hydrazine, VWR®, 100 mg/l, : N/A

Supplier: VWR Chemicals

Standard solutions of sodium carbonate.

Supplier: VWR Chemicals

Certified reference materials for use as standards for Total Nitrogen, typically used as standards for Kjeldahl nitrogen determination.

Supplier: VWR Chemicals

PAH mix in acetonitrile, 16 components, VWR®

Supplier: VWR Chemicals

The reference standards are designed to check the accuracy and the reliability of the results. They are meant to provide reassurance that the photometer is working correctly.

Supplier: VWR Chemicals

Avantor now offers a complete range of COD (Chemical Oxygen Demand) calibration standards (traceable to BAM) as CRM with concentrations between 20 and 10000 mg/L. Can be used to calibrate, control, verify or validate all COD test methods.

Supplier: VWR Chemicals

A high quality analytical reagent manufactured and certified compliant for use in ASTM D 665 / IP 135 the Standard Test Method for Rust-Preventing Characteristics of Inhibited Mineral Oil in the Presence of Water.

Supplier: VWR Chemicals

VWR® offers a complete range of products for the determination of the hydrocarbon oil index (HOI) in accordance with EN ISO 9377-2 (DIN H53).

Supplier: VWR Chemicals

These standards are ideal to use as control standards for COD measurements to verify that correct analysis for COD has taken place.

Supplier: Thermo Fisher Scientific

Starch Indicator Solution 1%, Standard Volumetric Solution, Acculute

Supplier: Thermo Fisher Scientific

Ground & Waste Water Pollution Standard Solution 2, Specpure®, : N/A, Matrix: 2-5% HNO₃ + (CHOH)₂(COOH)₂

Supplier: Thermo Fisher Scientific

For US EPA Clean Water Act.

Supplier: Thermo Fisher Scientific

For US EPA Clean Water Act.

Supplier: Thermo Fisher Scientific

For US EPA Clean Water Act.

Supplier: Thermo Fisher Scientific

Standard for TOC based on potassium hydrogen phthalate (KHC₈H₄O₄).

Supplier: Hach

For accuracy checks in ammonia nitrogen determinations.

Supplier: USP

USP Reference Standards are specified for use in conducting official USP–NF tests and assays. USP also provides Reference Standards specified in the Food Chemicals Codex as well as authentic substances—high-quality chemical samples—as a service to analytical, clinical, pharmaceutical and research laboratories. To confirm accuracy and reproducibility, USP Reference Standards are rigorously tested and evaluated by multiple independent laboratories including USP, commercial, regulatory, and academic labs. USP also provide publicly available, official documentary standards for pharmaceutical ingredients in the USP–NF that link directly with our primary reference standards.

Supplier: Hach

Control standard for nitrate determination, 25 mg/l as NO3, : N/A

Supplier: MACHEREY-NAGEL

COD, NANOCONTROL®, single standards, 4,0 g/l O₂, : N/A

Supplier: Hach

For accuracy checks in nitrite determinations.

Supplier: Hach

Standard solution for accuracy checks in cadmium determinations.

Supplier: Hach

COD standard solution (NIST), 1000 mg/l, : N/A

Supplier: Hach

Standard solutions for accuracy checks in manganese determinations.

Supplier: Hach

Standard solutions for accuracy checks in silica determinations.

Supplier: Hach

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

Supplier: Hach

Standard solution for accuracy checks in cobalt determinations.

Supplier: Hach

Standard solution for accuracy checks in sulfate determinations.

Supplier: Hach

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

Supplier: Hach

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