$100 - $150

LabSen 231 Glass-body pH Electrode for Wastewater, Suspension, Emulsion by Apera

Backed by proprietary Swiss sensor technology and materials, the LabSen 231 Combination pH Electrode is ideal for testing emulsion, suspension, wastewater, and samples containing protein and sulfide. Its 2-pore double junction structure and solid electrolyte make it hard to be contaminated and highly resistant to compression.

• Long-Life Reference System - The LabSen 231 pH electrode adopts a long-life reference system, which is composed of a glass tube, AgCl and a reference silver wire. The top end of the slim glass tube is stuffed with cotton, which prevents the reaction between AgCl and electrolyte when the temperature changes. It improves the stability of reference electrode and extends the service life of the electrode.
• Polymer Electrolyte - The polymer electrolyte is in direct contact with test samples. The anti-pressure capacity can reach up to 6 bars, making it ideal for testing suspension and wastewater.
• Special Glass Membrane - The LabSen 231 pH electrode adopts a hemispherical glass membrane, which is highly resistant to general impact (the traditional glass bulb membrane is a lot more fragile), and can be tested in high-temperature samples (up to 176°F).

Measuring Range: -50 to +350°C

600-0062-000 Nitrogen, 100%, 34L Steel Cylinder by RAE Systems

Standard single-gas and multi-gas mixtures for monitor calibration

• Sizes range from 11 liters to 103 liters
• Convenient multi-gas mixtures
• Choose between demand-flow and constant-flow regulators

223101 Chlorine Test Kit (Hach): Free & Total Chlorine Color Disc Test Kit by AquaPhoenix

0 - 0.68 mg/L Cl2
0 - 3.4 mg/L Cl2 Cl2
0 - 3.4 mg/L Cl2
1 - 10 mg/L Cl2

This color disc test kit uses powder DPD reagent that reacts with chlorine more quickly than tablet-form DPD, giving more accurate results. Powder DPD also has a considerable advantage over orthotolidine, a hazardous substance sometimes used as a free and total chlorine test reagent. Hach Chlorine Test Kits are manufactured by Hach to ensure compliance with stringent quality control standards. Kit contains 100 tests (50 free, 50 total).

Quickly and accurately measures free and total chlorine levels in the field or in the lab
Simple and fast color disc method

Includes two reagents, color disc, color comparator box, tube, instruction sheet, and carrying case.

H-10-119-20 Trichloroethylene Colorimetric Gas Detection Tube, 5 - 100 ppmv (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

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

H-10-139-05 Phenol Colorimetric Gas Detection Tube, 1 - 25 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

93982 NexStar+ Hand Control USB, EQ by Celestron

The Celestron NexStar+ EQ Hand Control is the standard computer accessory on all current equatorially mounted Celestron go-to telescopes: Advanced VX, CGEM, CGEM II, CGEM DX, CGX, & CGE Pro 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 customizable max slew speed, All-Star Polar Alignment, programmable slew limits, and more.

This hand control includes USB Flash Upgradeable Technology, allowing users to upgrade its software with Celestron Firmware Manager. Latest upgrades can be found on the Support Tab.

• NexStar Hand Control works with Celestron equatorially mounted computerized telescopes
• Compatible with Advanced VX, CGEM, CGEM II, CGEM DX, CGX, and CGE Pro series telescopes and mounts
• 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
• All-Star Polar Alignment
• Flash Upgradeable

GHS1212 Flame Hazard Class Pictogram Label (1"), 1120/Pad by GHS Safety

Provide your employees with a quick and easy way to identify Personal Protective Equipment & Hazard Class requirements. GHS labels are manufactured on a high gloss paper stock with pressure sensitive adhesive for ease of application and longer durability. Designed to be used with you in house labeling system where color printing isn't an option.

Make clean, professional looking labels in minutes. Labels are printed in sheets and padded with a cardboard backer for ease of use. Each sheet is perforated to allow removal when completed.

Labels are sold in pads. 1" diameter labels come 1,120 labels per pad. 1/2" diameter labels come 1,820 per pad.

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