pH, Conductivity & TDS Meters
ph, conductivity & tds meters — pre-owned
Browse 1,714 ph, conductivity & tds meters — pre-owned on eBay — listings updated every few minutes. All items are pre-owned and sold by eBay sellers directly.

LaMotte WaterLink Spin Touch DW 3585 Digital Photometer (Needs Battery)
Customer left this item about two years ago It was in for a battery replacement, but I wasn’t able to acquire the battery at the time. From my knowledge, the item is fully functional. Just needs a new battery. Good cosmetic Any questions feel free to ask

Bluelab Combo Meter pH Conductivity Temperature Tester CM2-1807-0064
Bluelab Combo Meter pH Conductivity Temperature Tester CM2-1807-0064

Thermo Scientific Orion Star A211 pH Meter with pH Sensor and Probe Arm
You save $132.50

Myron L Company 4P Ultrameter II Water Quality Analyzera
Myron L Company 4P Ultrameter II Water Quality Analyzer You are safe device as pictured tested to power on as shown no further testing done. Ships via USPS

HACH Pocket Colorimeter II 58700-06 Phosphate PO4 Tester w/ Case, Manual
Used with normal wear, powers up and responds to buttons. Comes with what is shown.

Mettler Toledo InPro 3030/150 Combination pH Sensor Probes 52-001-314 - Lot of 2
Model: InPro 3030/150 Combination pH Sensor Probe. Includes: 2x pH Sensor Probes. pH Range: 0-14. The unit is in used-functioning condition. It shows light handling marks and minor scuffs on the housing.

Waterlink Spin touch Rmn26830
tested and working as it should comes with some test disks 17 double packs they say expired in 2023 but they might be able to be used. The Waterlink Spin Touch Rmn26830 is a pH, conductivity, and TDS meter designed for professional use in various industrial settings. With its reliable brand reputation and advanced technology, this meter provides accurate and efficient measurements for water quality testing. Perfect for businesses and professionals in need of precise measurements for their water samples, the Waterlink Spin Touch Rmn26830 offers a convenient and user-friendly solution for ensuring optimal water quality.

Hach HQ20 Portable Dissolved Oxygen/pH Meter 51825-60 With Probe, WORKING
Model: HQ20. Make: Hach. Probe Is Included. Condition: Used / Working / Has Marker Writing On Back Cover. SUM Computers Inc.

Extech PH220 Waterproof Palm PH Meter With Probe
If you are not able to pick up locally, we are able to get competitive freight quotes as well.
You save $5.00

Lot of 2x pH Sensor Probes - EasyFerm Plus K8 200 & InPro 3030/150 (Best Offer!)
Model: EasyFerm Plus K8 200 & InPro 3030/150 pH Sensor Probes. Includes: 2 pH sensor probes. pH Range: 0 to 14 pH. Functional Testing: Untested, but retrieved from a laboratory in which the unit was functioning.
Lot of 3x H EasyFerm Plus VP 160 pH Sensor Probes 238641 (Best Offer!)
Model Number/MPN: 238641. Includes: 3x EasyFerm Plus VP 160 pH Sensor Probes. The lot consists of three Ham EasyFerm Plus VP 160 pH Sensor Probes. The glass components are intact and clear, showing no cracks or significant scratches.

METTLER TOLEDO SEVEN MULTI PH CONDUCTIVITY ANALYZER, Ph Meter
Nice Mettler Toledo SevenMulti in good working condition Comes as shown in pictures WITHOUT POWER ADAPTER.

THERMO ELECTRON CORP ORION 720A+ ISE/pH/mV/ORP
Qty 1- THERMO ELECTRON CORP ORION 720A+ ISE/pH/mV/ORP. P/N: 720A+. (No Hawaii, Alaska, Puerto Rico or anywhere outside the United States). NO EXCEPTIONS!

Denver Instrument Model 250 pH ISE Conductivity Meter

Thermo Orion VersaStar Pro Advanced Electrochemistry Meter w/ pH Module
Buffers used in the photos pH 10.01, pH 4.01, pH 7.0. pH / Conductivity Probe, AC Adapter. You Will Receive You Will Not Receive - Marks on the display and rubber softkeys, but none will affect how this unit operates.
You save $89.98

🔥Set Of 2 HACH pH Probe IntelliCAL PHC101 And PHC735 Tested And In Solution

Vintage EB Badger Sons Co Kleinschmidt Water Tester Military Navy Issue Turns On
Despite its age, the tester is functional and able to provide accurate readings on the purity of water. Turns on, untested otherwise. Military Navy issue. We do not test every port or feature. They can fail unexpectedly.

VWR Scientific Vintage Analog pH Meter with Electrode & Temp Compensation
Item is in good condition.
You save $30.00

Horiba ES-14 Digital Conductivity Meter - Portable Lab Tester w/ Electrode Probe
Excluding Weekends > 1. Serial No (if any) ====================================================================================================================================. Model No Or Type: ES-14.

Mettler-Toledo FiveEasy FE20 pH Meter with Probe
Nice clean unit. See photos

Hach Test Kit Colorimeter II 58700-18 Manganese LR PAN With Case
Manufacturer Hach. We are committed to working with you to resolve any issues and make things right. The condition of this item is used and may have dents, scuffs and scratches from normal use. Part Number 58700-18.

Mettler Toledo pH/mV Module (Accessory) 30034472

Hach CO2 Test Kit CA-23 Carbon Dioxide 1436-01
This Hach CO2 Test Kit CA-23 Carbon Dioxide 1436-01 is an excellent tool for testing the carbon dioxide levels in your business or industrial setting. It is a reliable and accurate meter that provides quick and efficient results. The kit is designed to measure the pH, conductivity, and TDS of your water, making it a perfect addition to your testing equipment. The Hach CO2 Test Kit CA-23 Carbon Dioxide 1436-01 is manufactured by Hach, a well-known brand in the test, measurement, and inspection industry. This meter is ideal for those in the business and industrial fields who require precise and reliable testing results. With this kit, you can easily monitor your water's carbon dioxide levels and make necessary adjustments to ensure optimal results.
You save $4.90

Hach Wide Range pH Test Kit Model 17N | 4.0 - 10.0 pH 1470-11

Mettler Toledo S220 SevenCompact pH/Ion Benchtop Meter w A/C Adapter
No more accessories included. Manufacturers' warranties and support may not apply. · · · YOU MAY ALSO LIKE · · ·. To learn morewatch our video. We provide work with these communities to provide dental education and services, groceries, and Christmas toys.
You save $30.60

Denver Instruments Model: 215 PH Meter (Complete)
I ran it through several different solutions with known PH levels as well as Millivolt levels. I am always open to new ideas.

Lot of 3x H EasyFerm Plus PHI Arc 120 pH Sensor Probes 238633-1313 (Best Offer!)
Model: PHI Arc 120 pH Sensor Probe. Includes: 3 pH Sensor Probes. pH Range: 0.14. Temperature Operation: 0-140°C.

Thermo Scientific 9107BN Orion Sngl Junction Epoxy Bodied pH/ATC Triode EXP 8/15
Thermo Scientific 9107BN Orion Sngl Junction Epoxy Bodied pH/ATC Triode exp 8/15. New old stock from plant liquidaiton. Unit expired 8/2015

Oakton Waterproof CON 150 Meter with Probe Charger Tested Working Complete
For full details on proper usage of the item, instruction for fitting and. Certification required before use. patient use. agencies that may be applicable.
You save $46.12

Hanna HI 221 Calibration Check Microprocessor PH Meter
The Hanna HI 221 Calibration Check Microprocessor PH Meter is a reliable and accurate pH meter designed for professional use in businesses and industries. Manufactured by Hanna, a trusted brand in the industry, this product ensures precise measurements for testing and inspection purposes. With its advanced microprocessor technology, it provides efficient calibration checks to ensure optimal performance. Perfect for monitoring and controlling pH levels in various applications, the Hanna HI 221 Calibration Check Microprocessor PH Meter is a valuable tool for maintaining quality and consistency in industrial processes.

Ohaus ST300 Starter 300 Portable Water Conductivity / TDS Meter
Ohaus ST300 Starter 300 Portable Water Conductivity / TDS Meter See all photos for details and condition.

Thermo Scientific Orion Versa Star Pro Meter Advanced Electrochemistry Meter
You save $9.50

Hanna HI 98171 Calibration Check pH/ORP Meter

Myron L 6PFCE Ultrameter II Handheld Water Quality Test Meter Instrument J23

Hanna Instruments HI 9813-6 pH / EC / TDS / Temp Waterproof Meter with Case
3-in-1 combination probe with pH, EC/TDS, and temperature sensors (HI1285-6).

METTLER TOLEDO SEVEN COMPACT S220 PH/ION METER W/ PROBE

YSI 626902 ProDSS Conductivity and Temperature Sensor - Untested ^
No returns. Being sold as is. We are not able to test these types of products. You will receive unit as shown in photos. The YSI 626902 is a digital smart sensor designed for measuring conductivity and temperature using the YSI ProDSS multiparameter water quality meter. It features a welded titanium construction and is compatible with the ProDSS, ProSwap Meter, and ProSwap Logger. Conductivity: Range: 0 to 200 mS/cm. Resolution: 0.001, 0.01 or 0.1 µS/cm (range dependent). Accuracy: ±0.5% of reading or 0.001 mS/cm (0 to 100 mS/cm), ±1% of reading (100 to 200 mS/cm). Temperature: Range: -5 to 70°C. Resolution: 0.1°C. Accuracy: ±0.2°C. Salinity: Range: 0 to 40 ppt. Resolution: 0.01 ppt. Accuracy: 1.0% of reading or 0.1 ppt. See Photos for Details Thank you for viewing out item.
You save $21.00

Thermo Orion Lab Star PH111 pH Meter TESTED with Warranty SEE VIDEO
PH Accuracy ±0.005, ±1 LSD. pH Range -2.000 to 18.000. Lab World Group. With over a decade of industry experience both owners have brought a variety of unique skill sets to The Lab World Group. The Lab World Group has grown from a startup into an entity with a global reach.

HACH Water Distribution Monitoring Panel Power Supply , 6957700

Hanna Instruments HI 2210 Benchtop pH Meter + HI1131 With 0.01 pH Resolution Pr
By placing an. Any misuse.