$25 - $50

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

SX615 Replacement Probe for the SX610 pH Pen Tester by Apera

The Apera Instruments SX615 probe is the replacement probe for SX610 pH pen tester. This replacement probe is equipped with glass bulb membrane and built-in temperature sensor. It has a measurement range of -2.00 to 16.00 pHand 0 to 50°c. Its 10 mm diameter probe allows measurement in most Test tubes, making it perfect for educational use and other common aqueous solution's ph measurement, such as hydroponics, aquaculture, pool & spas, water treatment, environmental monitoring, etc. CE-Certified and comes with a 6-month warranty

• 0 - 14.0 ph, 0 - 50°C
• Smallest probe (10 mm diameter), great for test tube ph measurement
• Glass bulb membrane with built-in temperature sensor
• Works well for 12-24 months under proper use and care

S020 3.5M KCl Refill Solution, 4 oz. by Sensorex

Refillable sensors can maintain accuracy for longer time periods. This sensor type requires re-filling with KCl solution when the liquid level is about 1 below the re-fill hole. To do this, slide the protective outer sleeve up to expose the filling hole and fill the electrode to the hole level with KCl (potassium chloride) solution.

WD-00652-32 Traceable® Conductivity and TDS Standard, Batch-Tested, 10,000 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
• 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 10,000 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

94460-77 Traceable® Sentry Triple-Display Thermometer with Calibration; -50 to 70C, Wire Probe by Digi-Sense

Thermometers include a weatherproof remote sensor with a 10-ft. (3.05m) long 1/16"-diameter micro cable. The micro cable is ideal for applications that require a seal, such as a refrigerator, where a larger cable would interfere with the sealing of the door. Unplugging the external probe will activate an internal sensor for monitoring ambient temperature. Thermometer features a high-impact ABS plastic case, large LCD that updates every 10 seconds, and a simple one-button reset to clear the high/low memory. Supplied with Velcro® strip for wall mounting or has a flip-out stand for tabletop use.

Traceable® products are calibrated to NIST-traceable standards and ready to use as soon as you receive it. Each product goes through an intense vetting process before it can carry the Traceable name, and it includes NIST-traceable certification. This means that a 17025-accredited calibration test lab has confirmed that the product meets or exceeds all stated specifications, saving you both time and money by not having to calibrate separately.

NIST-traceable calibration also helps you meet quality standards and regulatory compliance for ISO, FDA, cGMP, VFC, CAP, CLIA and Joint Commission requirements.

Models 94460-76 and -77 are designed for general-purpose applications

• Get accurate, reliable measurements with included NIST-traceable calibration
• Monitors temperature continuously

Includes

NIST-traceable calibration certificate with data, mounting hardware, and one battery.

93666 Large SCT & EdgeHD Adapter V2 for Off-Axis Guider by Celestron

Produce a larger area of illumination for your 9.25", 11" or 14" Schmidt-Cassegrain or EdgeHD telescope by using the this adapter. When this adapter is paired with our Off-Axis Guider, these two imaging accessories allow you to use the full image circle in our larger scopes. This configuration is especially helpful to owners of larger format cameras, such as the Canon 5D or 6D, since their full frame can take advantage of the more substantial area of illumination produced by larger optical tubes.

What's New!

The Large SCT & EdgeHD Adapter V2 for Off-Axis Guider has a longer optical length—38mm. The adapter's longer length provides DSLR cameras back-focus spacing for Schmidt-Cassegrain and EdgeHD optical tubes in conjunction with the Off-Axis Guider without the need for extra adapters or spacers.

Body

The Large SCT & EdgeHD Adapter V2 for Off-Axis Guider is machined aluminum black anodized. The internal surfaces are sandblasted to help prevent glare and provide the highest contrast. The adapter has a knurled surface providing a great gripping surface for threading and unthreading.

• Custom-designed adapter works in conjunction with the Celestron Off-Axis Guider to produce a larger area of illumination when imaging through larger Schmidt-Cassegrain & EdgeHD telescopes
• NEW! Longer length to better accommodate DSLR back-focus spacing without the need for extra adapters
• Great for larger format cameras like the Canon 5D or 6D–allows use of the full image circle for better illumination of the sensor
• Achieve the highest contrast with the adapter's black anodized aluminum construction
• Knurled surface provides a convenient gripping area for threading and un-threading the adapter from the telescope

Evaporator Filter

*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

GHS1289LP Class 4.2 Dangerous Goods Laser Drum Labels (Paper), 100/Pkg by GHS Safety

GHS pre-printed drum labels come with your choice of pictorgram that meets the UN recommendations on the Transport of Dangerous Goods. These labels make an excellent choice for short production runs or re-labeling of product for transportation. These lebels are printed on a Laser Printable Paper or Vinyl stock with a permanent peel and stick adhesive. Use any desktop publishing package to quickly make your own transportation labels. Available in 8.5" x 14" size and packaged in bundles of 100 sheets.

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

10-100-12 Ammonia Colorimetric Gas Detection Tube, 10 - 260 ppmv (10 Tubes / Box) 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

GHS1044 Training Certificate (50/pkg), French by GHS Safety

HazCom GHS Certificate of Completion is a great way to recognize employee achievement in completing their training on the new HazCom GHS requirements. This full color certificate is printed on thick sturdy card stock and has a blank areas to put both the student and trainer names. Certificate is 8-1/2" x 11" in size and suitable for framing. Cards are sold 50/pkg.