How do I obtain the calibration certificate?

This does not come with a NIST traceable calibration certificate supplied by the manufacturer. However, a certificate of analysis is available on Cole-Parmer.com. Enter the Cole-Parmer part number in the search box at the top of the page. Once of the item page, enter the lot number into the certificate of analysis box.

When does this product expire? 2021?

I purchased May 2019. Lot#CC18381 EXP. 04/17/2020. About a year shelf life.

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⚡ Stay ahead with precision you can trust!

USER FRIENDLY DESIGN - Bottle features printed KCl, NaCl, and 442 conversion charts for quick reference.
ISO 9000 QUALITY ASSURANCE - Manufactured under strict quality guidelines for professional confidence.
VERSATILE APPLICATION RANGE - Ideal for both laboratory and field analysis with a broad conductivity range.
OPTIMAL CONDUCTIVITY STANDARD - 1413 µS/cm value guarantees consistent and trusted measurements.
PRECISION CALIBRATED FOR ACCURACY - NIST-traceable solution ensures lab-grade reliability every time.

The Oakton AO-00653-18 is a 500 mL conductivity and TDS standard solution calibrated at 1413 µS/cm, manufactured under ISO 9000 guidelines and NIST-traceable for unmatched accuracy. Designed for professional lab and field use, it features convenient printed conversion charts and temperature correction data to streamline your measurement process.

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Manufacturer	COLE-PARMER
Part number	AO-00653-18
Item Weight	454 g
Package Dimensions	15.7 x 7.7 x 7.59 cm; 453.59 g
Measurement System	US
Batteries Required?	No

Oakton AO-00653-18 オークトン導電率およびTDS規格、1413 & 500 mL

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