$25 - $50

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

1102-1 Ball & Chain Safety Mechanism for 1004-HC Deadman Control by Western Technology

The Ball & Chain, p/n: #1102 or #1102-1 is designed as an integral part of the safety features of these products. If the operator drops the blast hose the ball will dislodge and automatically disengage the switch and the system will shut down.

P/N #1102 is to be used with:

• 1001-4K | 2-Wire Sealed Electric Deadman Control
• 1001-REPK | 2-Wire Repairable Electric Deadman Control
• 1001-REP-3K | 3-Wire Repairable Electric Deadman Control

P/N #1102-1 is to be used with:

• 1004-HC Wrist-EZ | Repairable Electric Deadman Control

Comes standard with our Deadman Control Switches... add this to your inquiry cart to purchase separately, or as extra, additional ball & chains.

18524-14 Type T Thermocouple Probe Quick Dis-connector, with Mini-Connector, 12" L, .062 Dia, Grounded Junction by Digi-Sense

The temperature range is for the probe tip only. The handle material may be affected if the probe is rated higher than the handle depending on exposure time, application, and handle material. ABS handles are rated to 220°F (104°C); PVC handles are rated to 200°F (93°C); Stainless Steel handles are rated at 450°F (232°C); Mini Connectors are rated to 392°F (200°C)

• Ideal for measuring liquids, gases, or semi solids
• Designed with 316 Stanless Steel sheath
• Response Time: 1.2 - 5 seconds or greater
• Includes a stand alone female connector for instalation to a thermocouple extension cable
• Each probe comes with a color coded ANSI dual standard connector: type J-black, type K-yellow, type T-blue, and type E-purple.
• Custom designs or changes to this product are available upon request.

90205-24 Traceable® Remote Probe Digital Thermometer with Calibration; Stick-Style, Fahrenheit by Digi-Sense

Stick-Style Remote Probe Thermometers have a 3-ft flexible cord, Min/Max memory, and simultaneous display of probe and ambient temperatures. Meter is chemical-resistant and shockproof; comes with a remote sensor and cable that can be submerged. Use as a pocket thermometer or mount for continuous use with the supplied self-adhesive Velcro® tabs.

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.

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

Includes

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

CD611 Conductivity Tester with ATC and 1 point manual calibration by Milwaukee

The Milwaukee Conductivity Pen is designed for hydroponic and other growers to help you make sure that your plants are receiving the right amount of nutrient. Keep EC in your target range to help your achieve better results.

DESIGN FEATURES

• Measures conductivity and temperature with automatic temperature compensation
• Ideal range for hydroponics (0 to 20,000 μS/cm)
• Units in μS/cm easily convertable to ppm
• Factory calibrated with the ability to recalibrate if needed
• 350 hours continuous use (3 x 1.5V batteries included)

MAINTENANCE

EC electrodes can develop nutrient build up over time. To miminize build up, always rinse the probe in fresh tap water after every use.

CONVERTING EC TO TDS

The Milwaukee EC Pen, like all conductivity meters, provides a measure of electrically charged ions in a solution and is an absolute measure of conductivity.

EC is often converted to TDS in parts per million (ppm). Different scales include the 500 scale, 650 scale and the 700 scale. However, true PPM can only be determined through chemical analysis.

Your mS/cm reading can be approximately converted to TDS (ppm) as shown in the examples below.

2,000 μS/cm = 2.0 mS/cm = 1000 ppm on .50 factor scale

2,000 μS/cm = 2.0 mS/cm = 1400 ppm on the 442 scale or .70 factor scale

18778 2 amp AC Adapter by Celestron

Enjoy your telescope without batteries with this AC adapter! When using your telescope at home or near any wall outlet, you can enjoy hours of uninterrupted observing. Running your telescope off of AC power is hassle-free and much more reliable than other methods, especially in cool temperatures, when batteries can lose charge quickly.

• Power your Celestron computerized telescope from any AC wall outlet
• 2 amp AC Adapter
• Suitable for indoor or outdoor outlets

This 2 amp AC Adapter is compatible with the following Celestron computerized telescopes:

• LCM Series
• NexStar SLT Series
• NexStar SE Series
• SkyProdigy Series
• Advanced Series
• Advanced VX Series
• CPC Series
• CPC Deluxe HD Series

CPC Deluxe HD Series - This adapter is sufficient for most visual observing with a balanced telescope. However, for astroimaging using additional equipment, the 5 amp adapter (product #18780) is recommended.

K-9820 Alkalinity, 100-1000 ppm as CaCO3 (Total) by AquaPhoenix

Increments: 100, 110, 120, 130, 140, 150, 160, 180, 200, 250, 300, 350, 400, 500, 700, 1000 ppm

Features of Titrets Technology:

• Dependable, sealed single-use titrants
• Fast, easy procedure -- no need to count drops
• No burettes or other equipment necessary
• Perform a titration ANYWHERE

K-7025 Nitrite Test Kit: CHEMetrics 250-2500 ppm as NaNO2 by AquaPhoenix

CHEMetrics Nitrite Titrets Kit Increments: 250, 275, 300, 325, 350, 375, 400, 450, 500, 625, 750, 875, 1000, 1250, 1750, 2500 ppm, Range: 250-2500 ppm as NaNO2, MDL: 250 ppm, Method: Ceric Sulfate Titrant with Ferroin Indicator , Kit comes in a cardboard box and contains everything needed to perform 30 tests: thirty ampoules with valve assemblies, titrettor, 25 mL sample cup, and instructions.

2314111 CL17 Free Chlorine Buffer Solution by AquaPhoenix

Quality, Reliability - Hach Free Chlorine Buffer Solution is specifically designed and produced to work with Hach CL17 Analyzers.
Simple, Predictable Maintenance - The CL17 is designed to require replacement of reagents on a predictable schedule under typical use. Maintenance can be performed in 15 minutes, and no special tools are required.

CL17 Free Chlorine Buffer Solution. Use with Free Chlorine Indicator Solution (2314011) and DPD Compound (2297255) for testing Free Chlorine using the CL17 Analyzer or bulk analytical methods.

B210 pH Buffer Solution, pH 10.00 Buffer, (Blue) 1 Quart by Sensorex

Sensorex supplies pH buffers as pre-mixed, ready-to-use, color-coded liquids.-- red (pH4.01), yellow (pH7.00) and blue (pH 10.00). All buffers are guaranteed accurate to within +/- 0.01 pH units @ 25 deg C. Available sizes include pints(473mL), quarts(946mL) and gallons(3.786L). Buffer labels include pH vs. temperature information for precise calibration. Custom buffers are also available on an OEM basis. Please contact Sensorex regarding your requirements.

Electrode storage solution is available in pint and gallon sizes. This is the same solution that is shipped with all pH electrodes and ensures electrodes are ready for immediate use. Storage solution is recommended for long-term electrode storage since it is not color-coded and will not impart any color to the electrode's reference junction.

Features:

• Choice of pH 4.01, pH 7.00 and pH 10.00 or custom formulations
• Pint, Quart and Gallon Sizes
• NIST Traceability Certificates Available at Additional Cost
• Private/OEM Labeling Capability
• Color-Coded for easy recognition

93644 T-Adapter, (EdgeHD 8) by Celestron

T-Adapter for 8" EdgeHD optical tube threads onto the rear cell.

This T-Adapter allows you to attach your 35mm DSLR camera to the prime focus of your EdgeHD telescope. This arrangement is used for terrestrial photography and short exposure lunar and planetary photography. It can also be used for long exposure deep-sky photography when using a separate guidescope.

Both a T-Adapter and T-Ring are required to mount a DSLR camera to your instrument.

90309-35 Irreversible 1-Point Square Temperature Label, 230F/110C; 50/Pk by Digi-Sense

Labels are made up of a series of temperature-sensitive elements sealed between heat-resistant substrates with transparent windows. Each element changes color distinctly as its rated temperature is met or exceeded. The changes to the label are irreversible, providing a temperature history of the surface being monitored. The labels will not delaminate when removed, allowing them to be attached to an inspection report to serve as a permanent record. Ideal for use in the food, automotive, molding and metal working industries. Accuracy is ±1.8°F below 212°F and ±1°F above 212°F. Shelf life: 1 year after date of purchase.

• Used as a quick inspection tool that the product is in usable condition during the shipping and receiving process
• Save time and money due to costly recalls
• Self-adhesive design

CD97 TDS Tester with ATC and 1 point manual calibration by Milwaukee

The Milwaukee CD97 Total Dissolved Solids Low Range (PPM) Pen is designed for water conditioning, education and many other applications. The CD97 helps you make sure that your keep your filters up-to-date and clean for water filtration and is a cost effective tool for teacher's science labs. Keep PPM in your target range to help your achieve better results.

DESIGN FEATURES

• Ideal range for water conditioning (0 to 999 ppm).
• Units in ppm easily convertable to μS/cm.
• Factory calibrated with the ability to recalibrate if needed.
• Automatic Temperature Compensation (ATC).
• 300 hours continuous use (4 x 1.5V batteries included).
• Simple one point calibration.

MAINTENANCE

EC/PPM electrodes can develop nutrient build up over time. To miminize build up, always rinse the probe in fresh tap or DI water after every use.

CONVERTING TDS TO EC

The Milwaukee TDS/PPM Pen, like all TDS meters, provides a reading measured in parts per million of contaminates per unit of volume in a solution.

TDS/PPM is often converted to uS/cm. Different scales include the 500 scale, 650 scale and the 700 scale.

Your TDS/PPM reading can be approximately converted to uS/cm as shown in the examples below.

1 ppm = 2 μS/cm on the 0.5 factor scale

1 ppm = 1.43 μS/cm on the 442 scale or .70 factor scale