$200 - $300

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

S272CD/10/TL pH Electrode, double-junction, 10ft (3M), TL by Sensorex

This series of electrodes is designed to provide an economical multi-purpose solution for in-line or submersion pH measurements. Based on our proven S200C bulb and S350CD flat surface pH glass technology, these rugged and durable electrodes are available in Ryton nipples with 1/2" or 3/4" NPT threads; or in our durable epoxy body with or without quick disconnect top caps. Choose from single or double junction designs, flat or recessed measuring surface configurations and cable lengths and connectors as required.

• Economical design for in-line or submersion use
• Choose from single or double junction models
• Threaded 1/2" or 3/4" NPT connections
• Choose from spherical or flat pH measuring surfaces
• Special models for low ionic and other specialty applications available

24611 CO50 Carbon Monoxide (CO) Meter by E Instruments

CO50 Portable CO-meter with built-in CO/temperature probe (0 to 500 ppm and -20 + 80°C). 1-line display. Functions: CO, temperature, Hold, change of unit, automatic switch-off. Supplied with soft case and adjustment certificate.

• Easy To Use
• HOLD Function
• 20 Minute Auto Shut-Off
• Carbon Monoxide (CO)
• Temperature
• Built-In Probe
• 2-Line Display
• Adjustment Certificate

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

2' x 2' Ceiling Exhaust Panel (TZ-18,24,36)

HI-1000P Hallway Air Intake for Interior Walls, Poly by Schaefer

• Designed to control airflow between two interior spaces
• Mounts flush to an interior wall up to 6" thick
• Durable polyethylene housing with insulated damper door and air deflectors adjust airflow volume and direction with the seasons

TG18-3WW-CPM 18" Tuff & Gusty Tent Fan with Channel Pole Mount by Schaefer

Schaefer pole mounted tent fans are ideal for tent cooling, heat circulation and detracting bugs. The all-white 12" fans blend in with most tents and are so quiet you don't hear them, you only feel them. Simply mount them on the tent side poles and turn them on. Use one tent fan every 15-20 feet.

Features and Benefits

• Mounts onto tent poles, saving floor space
• Wide variety of mounting options available for flexible and easy installation
• Quiet operation, high efficiency and output
• Easily stored and transported
• Misting kits available for even greater cooling

SG900CIT pH Sensor, Glass, 6mm, Calomel Free by Sensorex

Calomel Free pH electrodes!

The performance of a Calomel electrode is now available without the hazardous Mercury associated with the design. The "Calomel Free" design features an Ag/AgCl based double junction reference with a unique silver ion trap acting as a third junction to impede any silver ion contact with the sample. Reference output is adjusted to deliver the same output as a Calomel electrode using a silver chloride reference.

Glass or Plastic Body Electrodes!

Traditionally, pH electrodes have been made of all glass construction. However, today's thermoplastics are able to construct pH electrodes with durable and chemically resistant bodies to reduce any breakage. The protected design of the plastic body electrode extends over the measuring surface, making the pH glass bulb virtually unbreakable.

Sealed vs. Refillable Reference!

Both sealed and refillable styles are available. Sealed references are gel-filled and maintenance free while refillable designs extend electrode life by having a refillable reference electrolyte.

Features:

• Fast Response...No Silver Ion Contamination
• Use in Place of Calomel pH and Reference Electrodes
• Combination Triple Junction Design
• Uses No Hazardous Calomel Based Material (MERCURYFREE!)/RoHS compliant
• Sealed and Refillable Models
• Glass and Epoxy Body Models