$25 - $50

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

Length(MM) & Diameter : 225 X Ø6.4
Temperature: -100°C ~ +1000°C OR -148°F ~ +1832°F

201DJ-C pH Electrode (double-junction, BNC connector) by Apera

Apera DJS-0.1-C Conductivity Electrode (K=0.1) is designed for purified water and ultra-pure water conductivity measurements. It's equipped with a glass flow cell, which eliminates impact from CO2 in the air. The high-sensitivity platinum chip sensor design ensures high accuracy in low range conductivity solutions (0 to 200μS/cm). 3Ft cable length. BNC connector. The temperature probe is not included. To achieve temperature compensation, users need to use a separate temperature probe or manually input temperature values. 3Ft cable length.

*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

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

TDSK18000 Conductivity Solution, 10,289ppm/18000uS,1Qt by Sensorex

TDS/Conductivity instruments and sensors must be calibrated together. For a single-point calibration, select the one solution that approximates the expected conductivity or ppm level of total salts. Mixed Salt standards are the most frequently used in the field to sample naturally occurring water sources, boiler feed water, or cooling tower water. Typical river water, well water, or lake water sample will contain a mixture of several different salts. Sensorex Mixed Salt standards simulate a "Natural" mixture of common salt compounds found in these sources. Sodium sulfate, sodium bicarbonate, and sodium chloride salts are blended to provide a representative value. There are certain applications where Single Salt Solutions are preferred. NaCl Solution is routinely used to calibrate instruments measuring Sea Water or brackish water samples. Reagent grade salt and high resistivity DI water is compounded for accurate results. KCI Single Salt Solution may be used with conductivity meters that read directly in Siemens or Ohms. KCI (potassium chloride) is established as an international calibration standard for conductivity measurement. Choose the conductivity calibration solution that is right for your application. CA Residents: Prop 65 WARNING(S)

TT80P Class 8 TDG Label (Paper) by GHS Safety

Shipping Labels are essential for packages that contain dangerous goods. GHS labels are available in two materials. Paper for indoor applications and in vinyl for extended outdoor usage using a fade resistant ink. These labels meet the UN Recommendations on the Transport of Dangerous Goods.

Available in 500/roll formats.

90225-35 Traceable® Four-Channel Alarm Timer with Calibration by Digi-Sense

This timer allows you to count up to or down from 100 hours with 1-second resolution. This timer features a 3/4" high display and multiple channels that can be used simultaneously.

Each channel has a distinctive alarm that sounds for 1 minute, pressing any button will turn off the alarm. Timer memory recalls previous time set. Features time-of-day in 12- or 24-hour formats. Traceable® Products have an individually-numbered Traceable® Certificate provided with each unit, that assures accuracy from our ISO/IEC 17025:2017(1750.01) calibration laboratory accredited by A2LA. It indicates traceability of measurements to the SI units through NIST or other recognized national measurement institutes (NMI) that are signatories to the CIPM Mutual Recognition Agreement. Each product goes through an intense vetting process before it can carry the Traceable name, thus saving you both time and money by not having to calibrate separately.

• Memory returns display to previously programmed countdown time with touch of a button
• Extra-loud alarms sound for 1 minute
• Includes NIST-Traceable certificate from our A2LA accredited (1750.01) calibration laboratory
• Traceable® certificate provided

Includes

Magnetic clip, stand, and one 1.5 V button cell 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

F6-75W 75 Foot White F Male to F Male by Test Products International

F-series coax cable assemblies with screw-on ends for broadband applications, including video and cable television.

Features

• UL Listed Cable: Ensures quality and consistency in the cable construction.
• RG-6: Cable type that is standard in the video and cable TV industry
• Molded Ends: Limits the amount of bending the cable is exposed to at the connector to prevent cable breakage.
• Screw-on F-Type Connectors: Ensure positive connection thus eliminating shadows in the picture.
• Multiple lengths up to 100 feet
• Available in black or white
• Individually bagged

94247 EclipSmart Solar Filter for StarSense Explorer DX 102AZ and Omni XLT AZ 102 Telescopes by Celestron

Turn your Celestron StarSense Explorer or Omni telescope into a solar scope! The EclipSmart Eclipse Solar Filter is a must-have accessory perfect for viewing the Sun and eclipses like the upcoming 2023 Annular Solar Eclipse and 2024 Total Solar Eclipse. Affordable, easy to use, and best of all, all Celestron EclipSmart products conform to the ISO 12312-2:2015(E) international safety standard. This solar filter is custom designed for the StarSense Explorer DX 102AZ and Omni AZ 102 telescopes. Three safety screws securely hold the filter in place for a safe, snug fit.

Solar Safe Technology

EclipSmart solar products feature Solar Safe filter technology—the ultimate protection from harmful solar radiation, including IR and UV light, plus 99.999% of visible light. Celestron Solar Safe filter technology is SAFE for direct observation of the Sun and has been independently tested to conform to and meet the transmission requirements of ISO 12312-2:2015(E), Filters for Direct Observation of the Sun, EN 1836:2005 + A1:2007 (E) for an E15 Filter for the Direct Observation of the Sun and AS/NZS 1338.1:2012, Filters for Eye Protectors.

Important safety note: inspect your filter before every use. Do not use and discard if damaged, torn, punctured, or separated from the frame in any way.

• SOLAR SAFE TELESCOPE FILTER: Filter conforms to the ISO 12312-2:2015(E) international safety standard for filters directly viewing the Sun. The ideal tool for viewing eclipses, sunspots, or the Sun any day!
• WORKS WITH YOUR EXISTING TELESCOPE: Compatible with Celestron StarSense Explorer DX 102AZ and Omni XLT AZ 102 telescopes.
• SAFE, SNUG FIT: Three safety screws keep your filter securely attached to your telescope's objective. A safety cap protects outer surface of filter when not in use.
• SOLAR FILM MADE IN THE USA: Our Solar Safe film is produced in the USA by American Paper Optics, one of the suppliers recommended by NASA for safe solar viewing.
• GREAT VIEWS AND IMAGES: This filter features an orange tint, producing a natural look perfect for visual observing and capturing images through your telescope.