Certified Reference Material (RM) Sets

The Certified Reference Material sets have been assembled to make your verification task easier, and meet specific regulatory requirements. In addition, set prices do offer price savings over the purchase of individual Certified Reference Materials.
So where possible use the general syntax rules to construct your own set, even if it is simply an absorbance and wavelength set.
For example, a 60 mg/l potassium dichromate, together with a holmium oxide solution can be ordered under the part number RM-06HL.

Primary Requirement	Catalogue Number	Construction Parameter	Material	Wavelength
Full specification verification	RM-06HLKCSITX	Absorbance Wavelength Stray light Resolution	Potassium dichromate 60 mg/l, blank Holmium oxide Potassium chloride, sodium iodide, blank Toluene in Hexane	235 to 350 nm 240 to 650 nm 200 & 260 nm 265 to 270 nm
Photometric linearity	RM-0204060810	Absorbance	Potassium dichromate 20, 40, 60, 80, 100 mg/l, 0.001M perchloric acid blank	235 to 350 nm
Pharmacopoeia compliance	RM-06HLKCTX	Absorbance Wavelength Stray light Resolution	Potassium dichromate 60 mg/l, blank Holmium oxide Potassium chloride, blank Toluene in Hexane	235 to 350 nm 240 to 650 nm 200 nm 265 to 270 n
Similarity to NIST (USA) SRMs	RM-06HLKI	Absorbance Wavelength Stray light	Potassium dichromate 60 mg/l, blank Holmium oxide Potassium iodide, blank	235 to 350 nm 240 to 650 nm 260 nm
Similarity to NIST (USA) SRMs	RM-1N2N3N	Visible Absorbance	N.D. glass 1.10, 0.78, 0.56 A., blank	440 to 635 nm
Similarity to NIST (USA) SRMs	RM-N1N35N	Visible Absorbance	N.D. glass 2.10, 1.60, 0.30 A., blank nm	440 to 635
High end visible wavelength	RM-06DLKI	Absorbance Wavelength Stray light	Potassium dichromate 60 mg/l, blank Didymium Potassium iodide, blank	235 to 350 nm 290 to 870 nm 260 nm

Compliance references

Material	Test	Range	USP	Ph. Eur.	BP	ASTM	TGA
Potassium Dichromate	Absorbance	UV/Visible	*	*	*	*	*
Neutral Density Filters	Absorbance	Visible	*	*	*	*	*
Holmium Oxide	Wavelength	UV/Visible	*	*	*	*	*
Potassium Chloride	Stray Light	UV	*	*	*	*	*
Potassium Iodide	Stray Light	UV	*	.	.	*	.
Sodium Iodide	Stray Light	UV	.	*	*	*	*
Toluene in Hexane	Resolution	UV	.	*	*	.	*

Recertification
How often do I need to recertify my Certified Reference Material?
To ensure the validity of the calibration values of these Certified Reference Material’s it is recommended that they are re-certified at regular intervals. The periodicity of this recertification is under the control of the user, and is specific to the laboratory environment under which the unit is used.

To establish a statistical basis for determining this recertification interval, it is suggested that the Certified Reference Material in question be re-certified every 12 months for at least the first three years of use, and thereafter at a periodicity deemed suitable for the laboratory environment;
the interval between calibrations being established from the data generated in the first three years. Review of this process should be incorporated in any formal control of the system, and any major changes in the laboratory environment should be evaluated as to their impact on the calibration of the unit. (see MSDS)

Cells Reference materials other products Mirrors Prisms lenses coatings