You searched for: Environmental Analysis Standards

Supplier: Hach

Standard solutions for accuracy checks in magnesium determinations. HNO₃ matrix.

Supplier: Hach

ISE standards are used to calibrate ion selective electrode measurement systems by coresponding the electrode output with the concentration of the analyte. Pairs of standards with concentrations that differ by a factor of ten are used for analysis.

Supplier: VKI WATER QUALITY INSTITUTE

Certified Reference Materials (CRMs), produced by VKI, are designed to provide appropriate homogenous stable reference materials for quality control of environmental analyses. Certification is carried out in accordance with ISO Guide 30, 31, 33, 34, 35, ISO 5725 and ISO/REMCO N 37. All CRMs are traceable to a National Standard, or verified by a group of internationally recognised laboratories, and come with a Certificate of Analysis which states the certified value and the uncertainty at a stated level of confidence.

Supplier: Hach

System for Analytical Quality Assurance (AQA), consisting of one combined standard/spiking solution and two round robin test solutions.

Supplier: Dräger

Calibration gas with nitrogen background in non refillable cylinder.

Supplier: WTW

BOD standard solution, 210 mg/l

Supplier: PerkinElmer

Combustion calibration statndard for sulphur analysis, cystine (26,69% S), solid 4 g

Supplier: ROTRONIC INSTRUMENTS

Although most relative humidity (RH) probes have excellent long-term stability, it is recommended that their calibration be checked regularly.

Supplier: WTW

a-Ten 02552, anionic surfactants cell test - 25 determinations.

Supplier: Thermo Fisher Scientific

Hydrazine standard, Specpure®, : N/A, Matrix: 1% CH₃COOH

Supplier: WTW

These standard solutions for calibration contain 10 g of the ion to be measured per 10 liters.

Supplier: WTW

Standard solution for accuracy checks in potassium determinations.

Supplier: Restek

This contains perfluorotributylamine (PFTBA).

Supplier: Restek

Three mixes, from lean to rich.

Supplier: Restek

Isobutylbenzene, 1000 µg/ml in P and T methanol, : N/A, 1 ml/ampoule

Supplier: Restek

Minnesota Ag list 1 pesticides mix B,, 200 ppm each in acetone, : N/A, 1 ml/ampoule

Supplier: Restek

605 Benzidines calibration mix contains 2 components.

Supplier: Restek

Minnesota Ag list 1 pesticides mix A, 200 ppm each in acetone, : N/A, 1 ml/ampoule

Supplier: EHRENSTORFER

EPA method 8082A surrogate standard mixture 424, Native/Parent, 1000 µg/ml in isooctane, : N/A

Supplier: Restek

8040 Surrogate mix contains 2-fluorophenol, 2,4,6-tribromophenol.

Supplier: Restek

Pesticide mix #1, organonitrogen, Pesticide mixture, 500 µg/ml each in acetone, : N/A, 1 ml/ampoule

Supplier: Restek

508.1 surrogate (4,4'-dibromobiphenyl), 500 μg/ml in ethyl acetate, : N/A, 1 ml/ampoule

Supplier: Restek

This spike mix contains two components: 1-Chlorooctadecane and o-Terphenyl.

Supplier: Restek

Atlantic RBCA VPH mix, 1000 µg/ml in P and T methanol, : N/A, 1 ml/ampoule

Supplier: Restek

The mix consists of 1-bromo-2-chloroethane, 1-chloro-3-fluorobenzene and fluorobenzene.

Supplier: Restek

Dimethachlor ESA sodium salt, EPA method 535, 100 μg/ml in methanol, : N/A, 1 ml/ampoule

Supplier: REAGECON

Total organic carbon (TOC) standard solution, 4 mg/l C as KHP, : N/A

Supplier: EHRENSTORFER

Stable isotope labelled product type, mixture format, dichloromethane solvent.

Supplier: Restek

The mix consists of alachlor, atrazine, cyanazine (bladex), metolachlor, metribuzin, prometryne, simazine.

Supplier: Restek

Calibration check mix, 8270 acid, 2000 µg/ml each in methylene chloride, : N/A, 1 ml/ampoule