$25 - $50

*Please note we can only ship RKI products to customers within the United States

For use in high dust environments such as steel plants.

*Please note we can only ship RKI products to customers within the United States

WD-00652-26 Traceable® Conductivity and TDS Standard, Batch-Tested, 100 μS; 500 mL by Oakton

• 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. The tested uncertainty is 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

METHODS SUPPORTED

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.

A2LA ACCREDITATION ISO/IEC 17025:2005 (1750.01)

To assure accuracy an individually serial-numbered Traceable® Certificate is supplied to indicate traceability to standards provided by NIST (National Institute of Standards and Technology) and/or a National Standards Laboratory. A2LA accredited certification provides the highest achievable level of quality assurance, documentation, and accuracy. Conductivity Standards are produced in an A2LA accredited ISO/IEC 17025:2005 (1750.01) calibration laboratory. Additional certifications include ISO 31 (certificate content) and ISO 35 (statistical analysis), plus ISO 9001 (certified quality manufacturer).

• All Oakton® Traceable® conductivity standards are NIST-traceable reference materials
• Supplied with a calibration report from an ISO 17034 and ISO 17025 accredited laboratory
• 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 100 μS/cm

INCLUDES

temperature compensation chart, TDS conversion chart, and NIST-traceable calibration certificate with data.

Part Number: 17L-176-0.525

*Please note we can only ship RKI products to customers within the United States

720C Pocket Thermometer with Four Interchangeable Stainless Steel Probes by Jenco

Pocket Thermometer with four interchangeable stainless steel probes for immersion, penetration, surface or air/gases measurements. Sold in kits with all four probes and a handy padded vinyl pouch. Optional 2 meter extended curly cord model 720-31 is available for use when probes and meter are used for remote sensing.

• °C and °F models
• Splash resistant case
• Battery life : ~150 hrs.

*Please note we can only ship RKI products to customers within the United States

93722 SkyMaps Star Charts & Planisphere (Northern) by Celestron

Learn the night skies of the Northern Hemisphere with Celestron Sky Maps! This classic collection of seasonal star charts, topped off by a glow-in-the-dark luminous star finder, or planisphere, has been around for years and years! It continues to be so popular because beginning stargazers as well as seasoned amateur astronomers find that this book provides most everything they need to find constellations quickly and delve into seasonal night sky treasures with ease.

The front cover of this publication will be used well and often! It is a planisphere a rotatable star wheel that can be aligned with any date and time (past, present & future), resulting in a display of the night sky for that period of time. When the star finder is pre-exposed to light, all of the major stars will glow in the dark, mimicking the way they actually look in the night sky.

Inside you will find a collection of more detailed star charts for each of the four seasons. The charts are clear and concise, allowing you to find objects in the sky with your binoculars or telescope by "star-hopping." An illustrated reference section provides information on various types of objects.

Celestron Sky Maps are made from 13-1/4" x 11-1/4" water-resistant, heavy-duty card stock for years of enjoyment and use. A plastic spiral comb holds the pages together securely, but allows them to lay completely flat for use in the field.

• Glow-in-the-dark planisphere tells you which constellations are up for any date or time, and at a moment's notice!
• Seasonal star charts display the locations of the best deep-sky objects for summer, winter, spring, and autumn.
• Heavy card stock with a protective overcoat holds up to years of use.
• Plastic spiral binding lets star charts lay flat.
• For use in the Northern Hemisphere only.

WD-00652-53 Traceable® Conductivity and TDS Standard, Batch-Tested, 150,000 μS; 500 mL by Oakton

• 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. The tested uncertainty is shown on the certificate, whichever is greater
• Conductivity options range from 1 to 200,000 μS/cm
• Individually-tested solutions are certified by the bottle - each bottle is analyzed for the best accuracy

METHODS SUPPORTED

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.

A2LA ACCREDITATION ISO/IEC 17025:2005 (1750.01)

To assure accuracy an individually serial-numbered Traceable® Certificate is supplied to indicate traceability to standards provided by NIST (National Institute of Standards and Technology) and/or a National Standards Laboratory. A2LA accredited certification provides the highest achievable level of quality assurance, documentation, and accuracy. Conductivity Standards are produced in an A2LA accredited ISO/IEC 17025:2005 (1750.01) calibration laboratory. Additional certifications include ISO 31 (certificate content) and ISO 35 (statistical analysis), plus ISO 9001 (certified quality manufacturer).

• All Oakton® Traceable® conductivity standards are NIST-traceable reference materials
• Supplied with a calibration report from an ISO 17034 and ISO 17025 accredited laboratory
• 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 150,000 μS/cm

INCLUDES

temperature compensation chart, TDS conversion chart, and NIST-traceable calibration certificate with data.

*Please note we can only ship RKI products to customers within the United States

*Please note we can only ship RKI products to customers within the United States

10-108-10 Hydrogen Chloride Colorimetric Gas Detection Tube, 1 - 20 ppmv with Desiccant (5 Colorimetric Tubes and 5 Pre-Tubes) by RAE Systems

RAE Systems colorimetric gas detection tubes enable quick, on-the-spot measurement of a wide range of toxic and combustible gases and vapors. RAE Systems tubes are easy to read, and provide a sharp, clear color change directly corresponding to the concentration of gas present. RAE Systems tubes are compatible with the RAE Systems piston hand pump, a reliable way to draw samples of an exact volume required for the most accurate measurements.

Key Features

• Wide assortment of tubes available to detect over 300 gases and vapors
• Easyto use, even in multiple layers of gloves
• Easy-to-read with sharp,clearcolorchange
• No calibration or other maintenance required

Applications

• Oil and gas
• Chemicals and petrochemicals
• Agriculture and pestcontro
• Food and beverage production
• Environmental protection
• Fire service
• HazMat response
• Nationalsecurity

94440-00 Traceable® Triple-Display Digital Clock/Timer by Digi-Sense

Triple-display clock/timer features three channels, a count up stopwatch, 500-lap memory, and a clock. All three channels can be operated simultaneously. Memories of all channels can be recalled together. Stopwatch counts up to 24 hours with 0.01-second resolution. Countdown range is 20 hours; countdown and clock functions have a 1-second resolution. Timer counts up to show time elapsed since the alarm.

• Get timing faster-recall all channels' settings instantly
• Use as a countdown timer, count up stopwatch, or clock
• Count up to 24 hours, count down to 20 hours
• Displays time elapsed since alarm

Includes

Magnetic clip and battery.

*Please note we can only ship RKI products to customers within the United States

*Please note we can only ship RKI products to customers within the United States