$200 - $300

Part Number: 44L-431

Part Number: 34L-438

Part Number: 44L-403E

710483 Dual Cylinder Holder by MSA

Wall- or bench-mount allows user to house two cylinders, with or without regulators attached. Molded base locates cylinders in position. Easy to load and unload cylinder. Complete with securing straps and sized to house Model R, RP and Econo-Cal Cylinders. Size: 17" x 10" x 3 1.4".

600-0129-000 Four-Gas Calibration Mix, 34L Steel Cylinder (50% LEL CH4, 20.9% O2, 50 PPM CO, 5000 PPM CO2, Balance N2) 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

Weight: 4 lbs.

Part Number: 34L-456

WD-35801-72 Double-junction, Epoxy-body, Gel-filled pH Electrode (Use with pH 10, pH 100, pH 500, pH 1000, pH 2500 meters) by Oakton

Built-in temperature sensor lets you take ATC readings with a single probe

All-in-One electrodes feature a built-in temperature sensor for taking readings with Automatic Temperature Compensation (ATC). Choose a single junction electrode for field, clean water, and general purpose applications. Choose a double junction electrode for most applications, including dirty water, heavy metals and organics applications.

Each electrode is 12 mm dia with a 3 ft cable (except submersible electrode, which is 25 mm dia with a 10 ft cable). We offer other All-in-One electrodes

• Each 12 mm electrode includes a FREE electrode saver bottle to extend electrode life
• Feature a BNC connector for pH and a mini phono plug connector for temperature

Part Number: 34L-454

Part Number: M197830VN

PH60-SA Handheld pH Meter Tester Kit for Strong Alkaline or High Salinity Water Solutions with LabSen 845 ATC pH Electrode by Apera

Discover the next level of precision, reliability, and portability with our top-rated professional PH60 tester, now paired with the Swiss LabSen 845 pH/temp. electrode. This powerful combination revolutionizes pH measurement, especially in water solutions containing strong alkali or high salinity. The electrode also works well in general water solutions. Elevate your pH measurement experience with our comprehensive test kit that leaves no detail unaddressed. This all-inclusive kit not only includes ready-to-use calibration buffer solutions and soaking solution but also features the Apera CalPod Solution Organizer for optimizing your calibration process. All components are conveniently housed in a rugged carrying case, ensuring that you can effortlessly perform reliable pH measurements and calibrations wherever you go.

• PORTABILITY + RELIABILITY — The top-rated pH tester is now paired with the Swiss LabSen 845 pH/temp. electrode, allowing you to effortlessly take lab-grade pH measurement for strong alkaline solutions or high salinity solutions wherever you go.
• SWISS SENSOR TECH — Crafted with Swiss sensor technology and premium materials, the LabSen electrode's HA membrane is designed for minimizing alkaline error in strong alkaline and high salinity solutions;
• ROBUST REFERENCE SYSTEM — LabSen 845 employs a Silver Ion Trap Reference System along with Open junction and polymer electrolyte, outperforming ordinary Ag/AgCl systems by maintaining reference potential stability over time and eliminates junction clogs, which significantly extends the electrode's service life.
• INTELLIGENT METER BODY— The water-resistant meter body is featured with intelligent functions such as Automatic Calibration, Auto. Temperature Compensation, Reading Alarm Settings, Automatic Reading Lock, and more to meet your precision needs.
• COMPLETE TEST KIT — not only includes ready-to-use calibration buffer (pH 4.00/7.00/12.45) and soaking solutions, but also features the Apera CalPod Solution Organizer for optimizing your calibration process.

Part Number: CGQ582