$100 - $150

9" x 25' Disposable Ducting, 4-Pack

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

WD-35634-16 pHTestr® 5 Waterproof Pocket Tester by Oakton

Save money by replacing sensor, not the tester

Measuring water quality can be challenging. You need an instrument that is reliable over and over again. With the Oakton Waterproof Testr 5 Series pocket testers, you not only experience consistent reliability, but you also get a pocketful of useful features and benefits. You can also stretch your budget by only replacing the single-junction sensor and keeping the tester.

• Easy to set up and use
• Intuitive interface has self-diagnostic error messages, and stable reading and battery-life indicators
• Unique colored backlight indicates operating mode
• Simple to calibrate with automatic standard recognition USA or NIST
• Rugged IP67-rated housing is waterproof, dustproof, and floats in water with sensor cap on
• Leakproof cap with fill line functions as a sample, calibration, and hydrating cup
• Uses common AAA batteries

93981 NexStar+ Hand Control USB, AZ by Celestron

The Celestron NexStar+ AZ Hand Control is the standard computer accessory on all current altazimuth mounted Celestron go-to telescopes: SLT, LCM, SE, NexStar Evolution, and CPC, and CPC Deluxe computerized telescopes.

With the push of a button, you can access NexStar+'s huge database of over 40,000 celestial objects. Automatically slew to objects in a variety of catalogs, including the Messier, NGC, Caldwell, and SAO brightest stars. The planets as well as a list of the most popular objects are also included. Not sure what to look at? Use the Tour Mode, and you'll be shown a selection of the most popular objects for the time and date you are observing!

NexStar Plus includes many setup conveniences like SkyAlign, customizable max slew speed, programmable slew limits, and more.

This hand control includes USB Flash Upgradeable Technology, allowing users to upgrade its software with Celestron Firmware Manager.

• NexStar Hand Control is compatible with all altazimuth (AZ) NexStar telescopes
• Flash upgradeable via the Internet; latest updates can be found at Celestron.com
• 40,000-object database.
• Dual line, 16-character LCD screen with adjustable backlighting.
• Now connects to your PC directly with a mini-USB cable (cable not included) for software updates or optional telescope control with third party software

TECHNOLOGY

• USB
• SkyAlign
• All-Star Polar Alignment
• Flash Upgradeable

18520-98 Type T Thermocouple Probe Quick Dis-connector, Dual with Std-Connector, 18" L, .188 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 continuous monitoring
• Designed with 316 stainless 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

Measuring Range: -200 to +900°C

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

PP1085-J Potassium Phosphate Dibasic, ACS (Dipotassium Hydrogen Phosphate), 100gm by AquaPhoenix

• CAS No. 7758-11-4
• K2HPO4 FW=174.18

Specifications

• Grade: ACS
• Packaging Type: Poly
• Size: 100 gram

90446-46 Probe Type-J 24" L Hi-Tmp FJ Thermocouple Probe by Digi-Sense

Magnesium Oxide insulated thermocouples, commonly referred to as MgO thermocouples, are used in many process and laboratory applications. Many desirable characteristics make them an excellent choice for general and special purpose applications. They are available in all thermocouple element types, single or dual elements, a wide variety of sheath diameters / materials, rugged in nature, bendable, and have fairly high temperature ratings.

• 316 stainless steel sheath

GHS1033 SDS Station with Binder (18" x 24"), English/Spanish by GHS Safety

GHS Safety Data Sheet Information Station provides a central place to easily access all S.D.S. sheets for your plant or office. The Station comes with a sturdy metal pocket designed to hold the included binder. The mounting board is constructed of 1/4" plastic with 4 mounting holes to provide easy mounting and years of durability. Each station comes with a standard 3 ring SDS printed binder with A Z alphabetical dividers to sort all of your Safety Data Sheets.

The mounting board is constructed of 1/4" plastic with 4 mounting holes to provide easy installation and years of durability. 18" x 24"

English / Spanish

97610-51 LDM-65 Compact Handheld Laser Distance Meter by Digi-Sense

These laser distance meters are designed for high-accuracy measuring at an economical price. Compact size and simple-to-use push-button control with shortcut keys makes measuring fast and reliable.

• Measure up to 213 ft (65 m)
• Calculation of area (square footage) and volume
• Indirect measurement using Pythagoras calculation
• Continuous measurement
• Addition and subtraction of measurement
• Min/Max distance tracking
• Multiline and illuminated display

Includes

carrying case and batteries.

768KF-02 Panel Mount Digital Thermometer with Analog Voltage Output, Type K, Range -2 to 752 °F by Jenco

Panel mount digital thermometer with analog voltage output of 1 mV per digit, with analog output accuracy of ± 0.5% of span ± 1 digit, features a bright red LED display and 1/8 DIN plastic housing. Available in types. J or K with 4 available temperature ranges per type, specify degrees °C or °F. Ambient range 0 to 40°C. 115/230V AC operation.