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Description: Certified reference materials for use as standards for Total Nitrogen, typically used as standards for Kjeldahl nitrogen determination.
Catalog Number: 91273.180
UOM: 1 * 100 mL
Supplier: VWR Chemicals

Description: Potassium hydrogen phthalate solutions.
Catalog Number: 88225.180
UOM: 1 * 100 mL
Supplier: VWR Chemicals

Description: 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.
Catalog Number: 84208.600
UOM: 1 * 1 KIT
Supplier: VWR Chemicals

MSDS


Description: 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.
Catalog Number: 99169.260
UOM: 1 * 500 mL
Supplier: VWR Chemicals

Description: These standards are ideal to use as control standards for COD measurements to verify that correct analysis for COD has taken place.
Catalog Number: 85050.260
UOM: 1 * 500 mL
Supplier: VWR Chemicals

Description: For US EPA Clean Water Act.
Catalog Number: 36740.AE
UOM: 1 * 100 mL
Supplier: Thermo Fisher Scientific

Description: For US EPA Clean Water Act.
Catalog Number: 42580.AE
UOM: 1 * 100 mL
Supplier: Thermo Fisher Scientific

Description: Standard solutions of sodium carbonate.
Catalog Number: 88249.260
UOM: 1 * 500 mL
Supplier: VWR Chemicals

Description: Standard solution hydrazine, VWR®, 100 mg/l
Catalog Number: 87344.180
UOM: 1 * 100 mL
Supplier: VWR Chemicals

Description: PAH mix in acetonitrile, 16 components, VWR®
Catalog Number: 124832S
UOM: 1 * 1 mL
Supplier: VWR Chemicals

Description: 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).
Catalog Number: 88393.011
UOM: 1 * 10 mL
Supplier: VWR Chemicals

Description: 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.
Catalog Number: 88407.260
UOM: 1 * 500 mL
Supplier: VWR Chemicals

Description: For US EPA Clean Water Act.
Catalog Number: 36750.AE
UOM: 1 * 100 mL
Supplier: Thermo Fisher Scientific

Description: For accuracy checks in ammonia nitrogen determinations.
Catalog Number: 705-2023
UOM: 1 * 500 mL
Supplier: Hach

Description: 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.
Catalog Number: 1500502.
UOM: 1 * 1 KIT
Supplier: USP

Description: Standard for TOC based on potassium hydrogen phthalate (KHC₈H₄O₄).
Catalog Number: 42562.AP
UOM: 1 * 500 mL
Supplier: Thermo Fisher Scientific

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