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.

Total Nitrogen Standard (1000 mg/L) - for Photometric Applications

Supplier: CPACHEM

Total nitrogen standard (1000 mg/L) - for photometric applications, : N/A

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Indoor dust - trace elements, NIST-2584 standard

Supplier: PROMOCHEM

NIST-2584, indoor dust - trace elements, : N/A

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Standards for water pollution QC check, mercury, VHG

Supplier: PROMOCHEM

This solution is intended for use as a quality control check for methods related to mercury.

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EPA method 23 labelled cleanup standards, in nonane

Supplier: PROMOCHEM

EPA Method 23 daily calibration check standard [CS3], 0,2 ml in nonane, : N/A

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Reference standards, PAH mixture, CERTAN®

Supplier: PROMOCHEM

According to EU recommendation about the determination of carcinogenic PAHs in food (2005/108/EC) .

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Standards for portable colorimeters, CAL Check™

Supplier: HANNA

CAL Check™ Standard for pH/free Chlorine/total Chlorine, CAL Check™, : N/A

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COD standard solutions

Supplier: WTW

COD standard solution, volume: 30 ml, model: SL COD 400, 400 mg/l, : N/A

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Total organic carbon standards, VHG

Supplier: PROMOCHEM

This standard solution is intended for use as a calibration and reference standard for total organic carbon (TOC).

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Elemental analysis standards, river sediment

Supplier: PROMOCHEM

River sediment - extractable metals, : N/A

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BOD calibration standards, CRM

Supplier: PROMOCHEM

BOD calibration standard, 200 mg/l, : N/A, Matrix: H₂O

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Hard Drinking Water UK Low Level Metals

Supplier: PROMOCHEM

Hard drinking water UK low level metals, : N/A

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Certified reference materials for environmental analysis, IRMM BCR®

Supplier: PROMOCHEM

White clover (trace elements), : N/A

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Reference standards, PAH mixture 15

Supplier: PROMOCHEM

According to EU recommendation about the determination of carcinogenic PAHs in food (2005/108/EC) .

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Estuarine sediment standard - metals, NIST-1646A

Supplier: PROMOCHEM

NIST-1646A, estuarine sediment - metals, : N/A

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Glass - trace elements, NIST standards

Supplier: PROMOCHEM

This standard reference material is intended to facilitate the development of chemical methods of analysis for trace elements.

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Elemental analysis standards, portland cement (Ivory)

Supplier: PROMOCHEM

These are intended primarily for the evaluation and calibration of methods for analysis of cements and materials of similar matrix.

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Standards for water analysis, total kjeldahl nitrogen standard, VHG

Supplier: PROMOCHEM

This standard solution is intended for use as a calibration standard for total kjeldahl nitrogen (TKN).

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Chemical Oxygen Demand COD 50 mg/L Calibration Standard

Supplier: CUSTOM MADE CHEMICALS LAB

Chemical oxygen demand COD 50 mg/L calibration standard, : N/A, Calibration standard

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Standards for water pollution QC check, hexavalent chromium, VHG

Supplier: PROMOCHEM

This solution is intended for use as a quality control check for methods related to hexavalent chromium.

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Standards for water pollution QC check, total phenolics, VHG

Supplier: PROMOCHEM

This solution is intended for use as a quality control check for methods related to total phenolics.

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Elemental analysis standards, phosphate rock, western, NIST-694

Supplier: PROMOCHEM

This standard material is intended to use in validating analytical methods and in calibrating instruments used in the analysis of phosphate rock, fertilisers and similar materials.

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Standards for water pollution QC check, oil and grease concentrate, VHG

Supplier: PROMOCHEM

This material is designed for use as a quality control check for EPA method 1664. This standard is prepared in solvent n-propanol but not preserved.

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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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Reference standards, waste water - trace metals

Supplier: PROMOCHEM

This Reference material is intended for daily use in conjunction with measurement of elements in wastewaters. The water solution contains 13 elements with concentrations traceable to ultra pure metals or stoichiometrically well-defined substances.

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BOD standard solutions, VHG

Supplier: PROMOCHEM

The standard solution is intended for use as a glucose-glutamic acid standard check solution for biochemical oxygen demand (BOD) in APHA Method 5210 B.

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Elemental analysis standards, flint clay - constituent elements, NIST-97B

Supplier: PROMOCHEM

This standard reference material is intended for use in the determination of constituent elements in clay and material of similar matrix. Powdered clay was air-dried, ball-milled and blended to ensure homogeneity.

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Standards for formaldehyde-2,4-dinitrophenyl-hydrazone, BCR®

Supplier: PROMOCHEM

Used on glass fibre filters.

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Reference standards, gypsum

Supplier: PROMOCHEM

Certified reference materials (CRM) for gypsum and its constitutents.

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Environmental standards, WHO Dioxin-like PCB mixtures, in isooctane

Supplier: PROMOCHEM

WHO coplanar and mono-ortho PCBs, 1,2 ml in isooctane, : N/A

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Domestic sludge - metals, NIST-2781 standard

Supplier: PROMOCHEM

This standard reference material is intended to use in the evaluation of methods used for the analysis of sludges and other materials of a similar matrix. These are dried and pulverised domestic sludge.