Analytical standards

To DIN/NIST. Supplied in 250ml bottles. Tolerance ±0.02 pH.

These standards are ideal for use as control standards to verify that correct analysis for COD has taken place. Extensive range (10 to 60000 ppm), NIST traceable, 2 years shelf-life. HDPE bottle of 500 ml.

Please Note: These products will only operate with the correct type of air compressor and gas regulator as specified below.

These color standards can be used to calibrate, control, qualify or validate color measurement instruments to determine the color number. These standards can be described as Platinum-Cobalt, Pt-Co, Hazen or APHA color. All descriptions are interchangeable.

• Covers requirements of ASTM Method D 1209
• In 1 l HDPE bottle

Compatible for use on all Cryoscopes compliant to International Reference Standard ISO5764/IDF108 for the determination of Freezing Point in milk. High accuracy, 1 year shelf-life (from Date of Manufacturing). Supplied in 250 and 100ml HDPE bottle and a convenient cap with collapsible filling nozzle

Osmolality Standards for calibration and control, compatible with all types of osmometers. Extensive range: 50 to 3000 mOsmol/kg H₂O, ISO 17025 certified. Values from 100 to 700 mOsmol/kg H₂O according to European Pharmacopoeia 2.2.35 and US Pharmacopeia 785. 12 ampoules of 5 ml each.

Bottles of 500 ml, certified according to QS System, ISO 9001. Shelf life 12 months. Other versions available on request.

Suitable for calibration, control, IQ / OQ and method validation. Compatible with all Flame Photometry Instruments. Available as single element analytical standards (in ppm) or Multi-element clinical standards (in mmol/l). NIST traceable. HDPE bottles of 500 ml.

Highly accurate turbidity standards composed of suspended microspheres, suitable for Instrument calibration and control of all turbidity meters. Stable, shelf life of 2 years (from Date of Manufacturing). NIST traceable, US EPA approved and tested in compliance with ISO 7027. HDPE bottles of 100 ml.

Two ranges available:

• Ratio range for Ratio Turbidity Measuring instruments (measure of the scattered light from the sample at a 90° angle from the incident light, plus at additional angles (several detectors)
• Non Ratio for Non Ratio Turbidity Measuring instruments will measure the scattered light from the sample at a 90° angle from the incident light (one detector)

For ammonia ISE electrodes 9512BNWP and 9512HPBNWP.

Standard solution. Bottle of 250 ml. Other solutions on request.

For testing ORP electrodes.

To maintain constant good measurement results, a regular review of the accuracy of the spectrophotometer is required. With the use of certified reference materials from Hellma Analytics, you make sure that your equipment qualifications meet the requirements of the pharmacopoeias and fulfill your internal quality requirements, at the same time you reach the international comparability of your measurement results. The certified reference materials (calibration standards) of the DIN EN ISO 17025 accredited Hellma Analytics calibration laboratory are traceable to the primary standards of NIST (National Institute of Standards and Technology) and meet the requirements of the major pharmacopoeias (e.g. EP, DAB, USP).
Your benefits:

• High quality of the measurement results
• International comparability of measurement results
• Meeting the requirements of the major pharmacopoeias (EP, DAB, USP)
• Results traceable to NIST primary standards
• 30 years warranty on the reference materials

• Certified reference materials (Calibration Standards) in quality storage box
• DAkkS Calibration Certificate (DIN 17025)
• Handling guidelines

Values stated at 25°C. Supplied in containers as indicated. Accuracy ± 2%.

Microsart^® Validation Standards are quantified CFU preparations, containing 10 CFU per vial, optimized for validating NAT based tests.

Calibration standards ensure measurement accuracy. TISAB (Total Ionic Strength Adjustment Buffer) solutions are used to adjust the ionic strength for fluoride measurements.

Standard solutions acc. to DIN 19266 for calibration in pH measurement. Buffer solutions in the double-end ampoules offer a particularly high degree of reliability and measuring accuracy.

• Hot steam sterilised, very long shelf life
• Without preservatives
• With manufacturer certificate
• 20 ml ampoules with approx. 17 ml content

All values quoted are potentials of Platinum Electrode v Ag/AgCl reference (3M KCl) at 25 °C.
Bottles of 500 ml.