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Your cart is empty.These standard solutions let you calibrate conductivity instruments to ensure accuracy. If unopened, shelf life is one year; once opened, shelf life will vary by solution value. Use when readings are expected to be around 1000 µS/cm. Oakton Traceable conductivity and TDS standards have detailed labels: KCl, NaCl, and 442 conversions, temperature corrections, and certified values referenced to 25°C—convenient! Average accuracy at 25°C is ±0.25 microsiemens for 1, 5, 10 microsiemen (µS) solutions, or ±0.25% for all other solutions or the tested uncertainty shown on the certificate, whichever is greater. Conductivity options range from 1 to 200,000 µS/cm. Batch-tested solutions are lot certified; a few bottles from a single lot are analyzed. Certified reference material meets test requirements for Federal, State, and local agencies, CAP, ASTM, NCCLS, CLSI, ACS, CLIA, AOAC, EPA, APHA, AWWA, WEF, USGS, USP, and ISO. Traceable Conductivity Standards complies with and is essential for use in these official methods: AOAC 973.40, EPA 120.1, Standard Method 2510 (APHA, AWWA, WEF), ISO 7888, DIN 38404, ASTM D1125, USGS I-1780, USP 645, and for A2LA/NVLAP accreditations/ISO 9000 certifications. Material may be used to calibrate all conductivity meters and to determine all conductivity cell constants.
$88.25
$ 36 .99 $36.99