$200 - $300

Part Number: F105325PM90

AI4110-M DO500-M Polarographic DO Electrode with 5-meter Cable by Apera

The replacement polarographic DO electrode for Apera SX716, SX725, SX726, SX736, SX751, SX816, SX836.

• Comes with the calibration sleeve
• Integrated temperature and salinity sensors
• Replaceable DO membrane cap (3 replacement membrane caps and an inner solution refill are included in the kit).
• Regular electrode polarization only takes 5 minutes.
• Quick response – measurement reaches 90% response within 30 seconds.

Part Number: M1072.5VN

Part Number: J407C1000PN

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

2619309 Bacteria Tests: Hach Denitrifing Bacteria 9 pk by AquaPhoenix

BART biodetectors are excellent diagnostic tools to help identify the presence and activity of various bacteria.

Denitrifying bacteria indicate the decomposition of waste organic nitrogenous materials. These bacteria reduce nitrate to nitrite and some continue nitrification to gaseous nitrogen (complete denitrification). In water, aggressive denitrifiers can indicate high concentrations of nitrates, and that the sample is probably anaerobic and relatively rich in organic matter. The presence of denitrifying bacteria can indicate that the water has been polluted by nitrogen-rich organics from sources such as compromised septic tanks, sewage systems, industrial and hazardous waste sites. If highly aggressive bacteria are detected, the water should be tested for the presence of coliform bacteria.

• Simple yet effective method for monitoring the population size and/or activity of specific groups of bacteria
• Easy to use, requiring no elaborate or costly equipment and no specialized training
• Effective and affordable tests are easy to interpret and can be performed at room temperature in virtually any environment

SCT-108.002.D1 DO Electrode by ScichemTech

• DO electrode
• Polarographic DO electrode
• Suited for application in lab and field
• 8 PIN connector

6011M Handheld pH/ORP Meter With Batteries Only by Jenco

The Basis Portable Series is Jenco's latest iteration of our portable meters and represents a huge step forward for on-location water quality measurements. This series introduces Bluetooth or non-Bluetooth connectivity and a merging of the best features from our other series, which means we double down on reliability, usability and value.

Accurate, Reliable Measurements

• up to 3 Point calibration (pH)
• >1012 Ω input impedance (pH)
• Automatic or manual temperature compensation (pH)
• Each and every unit is hand calibrated and QC ed by at least 2 teams
• CE, RoHS complaint

Improved Usabiltiy

• Clear, large LCD
• Membrane buttons with tactile feedback On-device memory storage
• IP67 water-tight housing
• Removable, rugged protective case
• Inclined back for tabletop use

Other Meters In This Series

• Single and dual parameter pH, ORP, conductivity, TDS, salinity, dissolved oxygen,optical dissolved oxygen, pH/ORP/EC, pH/ODO
• Polarographic or optical DO
• Bluetooth and non-Bluetooth models
• With memory storage
• With or without protective case

Part Number: M1013300PA

Part Number: JR1231000PA

*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

Part Number: M126525LM2

MA888BOX Digital Refractometer for Ethylene Glucol by Milwaukee

Thousands of cooling tower and recycle professionals from boiling towers to antifreeze recycling move to the digital MA888 Digital Ethylene Glycol meter for measurement of the refractive index to determine the % volume and freezing point of ethylene glycol based coolants or antifreeze, from less precise optical refractometers.

WHAT PEOPLE ARE SAYING

"Using this for my anti-freeze recycling business has saved me time and money."

"I am in love with this instrument. No more large samples. No more phony readings from badly made refractometers."

"Dramatically improved my commercial cooling tower evaluation times."

"I found the refractometer was much easier to use than I thought."

SUMMARY

The Milwaukee digital Ethylene and Glycol refractometer is temperature compensated with a 0 to 100 % volume / 0 to -50°C (32 to -58°F) freezing point / Temperature 0 to 80°C (32 to 176°F) range and +/- 0.2 volume / +/-0.5°C (+/-1°F) freezing point accuracy. It is easy to use with simple two button operation and fast with a response time under 2 seconds. Maintenance is a breeze also with an easy-to-clean sealed flint glass prism and stainless steel well. The MA888 eliminates the uncertainty of optical refractometers by providing and accurate digital readout.

DESIGN FEATURES

• Fast, accurate results with digital dual level LCD readout.
• Easy measurement with just 2-3 drops of sample needed and results less than 2 seconds.
• Simple one-point calibration using distilled or deionized water.
• Easy to clean, stainless steel sample well with unit rated to IP65 as "dust tight" and protected against water jets.
• Battery percent level indicator with automatic shut-off (batteries included).
• Ideal for winemakers, brewers, syrup producers, food producers and many other applications.
• The instrument utilizes internationally recognized references for unit conversion and temperature compensation for ethylene glycol. solutions (e.g. CRC Handbook of Chemistry and Physics, 87th Edition).

9011M Handheld DO/Temp Meter With Memories by Jenco

Well-designed, Inside and Out

The Basis Portable Series is Jenco's latest iteration of our portable meters and represents a huge step forward for on-location water quality measurements. This series introduces Bluetooth or non-Bluetooth connectivity and a merging of the best features from our other series, which means we double down on reliability, usability and value.

Accurate, Reliable Measurements

• 1 Point calibration (DO)
• Each and every unit is hand calibrated and QC'ed by at least 2 teams
• CE, RoHS complaint

Improved Usabiltiy

• Clear, large LCD
• Membrane buttons with tactile feedback On-device memory storage
• IP67 water-tight housing
• Removable, rugged protective case
• Inclined back for tabletop use

Other Meters In This Series

• Single and dual parameter pH, ORP, conductivity, TDS, salinity, dissolved oxygen,optical dissolved oxygen, pH/ORP/EC, pH/ODO
• Polarographic or optical DO
• Bluetooth and non-Bluetooth models
• With memory storage
• With or without protective case

LabSen 871 Glass-body Double-junction pH Electrode for non-aquaous/Organic Solutions by Apera

Built with proprietary sensor technology and premium materials from Switzerland, Apera LabSen 871 Glass-body pH Electrode is made for pH measurement of both water-miscible organic solvents (e.g. Methanol, Ethanol, isopropanol, DMSO, Acetonitrile) and water-immiscible organic solvents (e.g. hexane, chloroform, toluene, etc.)

• Proprietary sensor technology and premium materials from Switzerland
• Built with LabSen's most robust PHY glass membrane, effectively protecting the membrane's hydrated gel layer from damage by organic solvents and maintaining sensitivity to the hydrogen ion response
• Double liquid junction structure — the outer junction adopts a movable sleeve with 1M LiCl electrolyte for better solubility in organic solvents, resulting in more stable readings
• The specially formulated blue gel inner electrolyte eliminates the chance of any air bubbles inside the sensor. Just so you don't have to worry about jumping readings out of nowhere. extends the electrode's service life.

MH-125V-GFA-A 125,000 BTU LP Forced Air Heater by Master

The Master MH-125V-GFA is an ideal forced air heating solution for spaces up to 3,125 sq. feet with propane. It utilizes Master's tried and true propane torpedo heater design, honed over the last 3 decades, and also comes equipped with the most modern safety features available.

CSA Certified for use with 100 lb LP Cylinder.

Advanced safety features include high temperature limit shut-off, flame-out fuel cut and a thermocouple. An LP cylinder hose and regulator are also included.

Three heat settings allow efficient use in a variety of locations.

Light weight and versatile, the Master MH-125V-GFA propane space heater is great for use in medium area construction sites, garages, workshops, warehouses, and barns.

• Adjustable heat angle
• 10 ft. hose and regulator included
• Fully enclosed gas controls
• Over-heat shut-off
• Continuous electronic Ignition
• Variable heat settings

MAC-24DCT 24" High Velocity Tiltable Direct Drive Barrel Fan by Master

High velocity floor fans deliver fast cooling for localized spaces. Perfect for blowing some refreshing air in the garage, or delivering air to cool a generator. These high velocity fans are an effective way to turn down the heat quickly.

• Heavy-duty all metal construction
• Adjustable direction
• Open motors; not suitable for wet or dusty environments
• 1-year limited warranty