pH, Conductivity & TDS Meters

ph, conductivity & tds meters — pre-owned

1,746listings

Browse 1,746 ph, conductivity & tds meters — pre-owned on eBay — listings updated every few minutes. All items are pre-owned and sold by eBay sellers directly.

​YSI 650 MDS Handheld Data Logger  Display 600XL Multi-Parameter Sonde & Charger
UsedBuy It NowBest Offer

​YSI 650 MDS Handheld Data Logger Display 600XL Multi-Parameter Sonde & Charger

Used YSI 650 MDS Handheld Data Logger Display with 600XL Multi-Parameter Sonde & Charger. Unit is clean and working properly. Unit comes with items seen in pictures, no other items included, Thanks.

$295.00
+$24.98Miami, US
sunmarinesurvey
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100.0%Excellent· 700
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Thermo Scientific Orion Star A324 pH Meter Orion Star A324 Bench Meter
UsedBuy It NowBest Offer

Thermo Scientific Orion Star A324 pH Meter Orion Star A324 Bench Meter

Thermo Scientific Orion Star A324 pH Meter Orion Star A324 Bench Meter

$165.00
See listingPasco, US
vonfair-0
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100.0%Excellent· 5
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Myron L Company 4P Ultrameter II Water Quality Analyzera
UsedBuy It NowBest Offer

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

$225.00
+$9.00Houston, US
luckyp2000
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99.7%Excellent· 2.1k
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Mettler Toledo SAG285 /01 Control Module
UsedBuy It Now

Mettler Toledo SAG285 /01 Control Module

The Mettler Toledo SAG285 /01 Control Module is a high-quality electronic device designed for precise measurement and control in industrial settings. This product, from the reputable brand Mettler Toledo, is specifically designed for testing pH levels and conductivity in various liquids. With advanced technology and reliability, this control module provides accurate and efficient readings, making it an essential tool for businesses and industries that require precise measurements for quality control and process optimization.

$500.00
See listingWestfield, US
rikacreation
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100.0%Excellent· 1.3k
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Thermo Scientific Orion Star A211 Benchtop PH Meter ,unit only
UsedBuy It NowBest Offer

Thermo Scientific Orion Star A211 Benchtop PH Meter ,unit only

Purchase Information: Please note that this product is used. Therefore, some signs of use or minor scratches on the surface are inevitable. However, these cosmetic flaws do not affect the product’s functionality. We sell a wide range of industrial equipment, automation parts, electronic components, and hard-to-find surplus inventory. New items are added regularly, so be sure to follow our store for the latest arrivals. Wholesale orders, bulk purchases, custom sourcing requests, and reasonable offers are always welcome. Please contact us through eBay messages for any questions or inquiries. B01#

$29.99
See listingRancho Cucamonga, US
electronics7996
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99.8%Excellent· 3.2k
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Thermo Orion Model 210A pH Meter with Probe
UsedBuy It Now

Thermo Orion Model 210A pH Meter with Probe

The Orion meter was tested but not calibrated. It appears to be working but it was only partially tested. The probe is functional. Sold as-is. Battery included.

$45.00
Free ShippingBattle Ground, US
devokan
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99.9%Excellent· 8.8k
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MYRON L 4P Ultrameter II Water Quality Analyzer Tester
UsedBuy It Now

MYRON L 4P Ultrameter II Water Quality Analyzer Tester

$199.00
Free ShippingRiverview, US
clamebake99
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99.9%Excellent· 27.7k
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Nice tested working Hach Model CL-17 Chlorine Analyzer P/N 5440060
LIVE BID
UsedAuction

Nice tested working Hach Model CL-17 Chlorine Analyzer P/N 5440060

These are from a local utilities upgrade. No other accessories included.

$149.99
0 bids6d 14h left
Free ShippingFountain, US
cheeseitlover30
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100.0%Excellent· 1.4k
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Nice tested working HACH HQ30D flexi PORTABLE MULTI-PROBE METER & case cover
LIVE BID
UsedAuction

Nice tested working HACH HQ30D flexi PORTABLE MULTI-PROBE METER & case cover

$124.99
0 bids4d 14h left
+$9.99Fountain, US
cheeseitlover30
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100.0%Excellent· 1.4k
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Honeywell 04973-X10-333-X1-00-000-000 Conductivity Cell Cell Sensor Module
UsedBuy It NowBest Offer

Honeywell 04973-X10-333-X1-00-000-000 Conductivity Cell Cell Sensor Module

$449.00
Free ShippingEast Longmeadow, US
latheworks
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100.0%Excellent· 638
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Optek C221 Control 200 Conductivity Controller
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UsedBuy It NowBest Offer

Optek C221 Control 200 Conductivity Controller

Item was recently removed from working service and is in excellent working order. Item will come with a 30 Day Warranty. Cosmetically in good condition showing minor scuffs / scratches / blemishes from previous use. Includes Conductivity Controller as pictured. No additional items or accessories are included. Pictures are of one of the actual units available. Inventory is on hand and ready to ship. Please feel free to message us with any questions you may have. .

$97.06
+$5.55Rancho Cordova, US
ntc_techTOP
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99.9%Excellent· 44.7k
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VWR Scientific Vintage Analog pH Meter with Electrode & Temp Compensation
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UsedBuy It NowBest Offer

VWR Scientific Vintage Analog pH Meter with Electrode & Temp Compensation

Item is in good condition.

$59.99$99.99-40%

You save $40.00

Free ShippingChelsea, US
theestatekingsTOP
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99.7%Excellent· 19.6k
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Hach DR2800 UNTESTED no power cord
For parts or not workingBuy It NowBest Offer

Hach DR2800 UNTESTED no power cord

The Hach DR2800 is a reliable brand known for producing high-quality test meters and detectors. This specific model is designed for measuring pH, conductivity, and TDS levels in various industrial and business applications. While the product listed is untested and has no power, it still holds value for individuals looking for a dependable and accurate measurement tool. With its brand reputation and capabilities, the Hach DR2800 is a promising option for those in need of precise measurements in their work environment. Untested unit. No power cord. Was salvaged from a warehouse. Prior company went out of business within 2 years. Unit appears to be slightly used. Packaged with care. No returns

$179.99
See listingBeatrice, US
elegant_beginnings
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100.0%Excellent· 267
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Thermo Scientific Orion 4 Star Portable pH/ISE Meter Orion 4 Star
UsedBuy It NowBest Offer

Thermo Scientific Orion 4 Star Portable pH/ISE Meter Orion 4 Star

Thermo Scientific Orion 4 Star Portable pH/ISE Meter Orion 4 Star

$142.50
See listingPasco, US
vonfair-0
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100.0%Excellent· 5
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Hach DR/850 & DR/890 Colorimeter Lot – Water Testing Meters – Working/one Parts
UsedBuy It NowBest Offer

Hach DR/850 & DR/890 Colorimeter Lot – Water Testing Meters – Working/one Parts

Sold as untested / parts or repair. Powers on status unknown (no display in photos).

$299.00
See listingMiami, US
mutton22
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100.0%Excellent· 449
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AquaPhoenix HQ11D pH/ORP Meter - HQ11D53000000
UsedBuy It Now

AquaPhoenix HQ11D pH/ORP Meter - HQ11D53000000

Only the device.

$400.00
See listingSalisbury, US
turbo_gift_box
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100.0%Excellent· 22
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Traceable VWR 21800-012 Conductivity Meter With Probe & Travel Case Portable
-67%
UsedBuy It Now

Traceable VWR 21800-012 Conductivity Meter With Probe & Travel Case Portable

Portable VWR International 21800-012 VWR Conductivity/Temperature meter sold with case Item #: VAN/21800-012 Manufacturer: Northwest Scientific Inc.

$56.99$173.99-67%

You save $117.00

Free ShippingCass City, US
8ten1944
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99.8%Excellent· 365.3k
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Pyxis Water analyzer Model SP 710B
UsedBuy It NowBest Offer

Pyxis Water analyzer Model SP 710B

Pyxis water analyzer.

$200.00
Free ShippingCedarburg, US
maleona_61
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100.0%Excellent· 17
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Thermo Orion VersaStar Pro Advanced Electrochemistry Meter w/ pH Module
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UsedBuy It NowBest Offer

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.

$209.97$299.95-30%

You save $89.98

Free ShippingSan Diego, US
avr-salesTOP
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99.8%Excellent· 17.9k
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Hach Dr300 Bromine
UsedBuy It NowBest Offer

Hach Dr300 Bromine

Hach Dr300 Bromine. Condition is Used. Shipped with USPS Ground Advantage.

$315.00
Free ShippingRichmond, US
jocam_7173
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99.7%Excellent· 636
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Nice used Hach 5500sc Phosphate Low Range Analyzer PO4 3- HR Manual & extras.
LIVE BID
UsedAuction

Nice used Hach 5500sc Phosphate Low Range Analyzer PO4 3- HR Manual & extras.

Super deal! All taken out of use from a local utility provider here in Colorado Springs. There is also a couple related manuals in the booklet.

$749.99
0 bids4d 14h left
+$149.99Fountain, US
cheeseitlover30
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100.0%Excellent· 1.4k
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Hanna Instruments HI 2211 Benchtop pH/ORP Meter w/ Electrode Arm Tested Working
UsedBuy It Now

Hanna Instruments HI 2211 Benchtop pH/ORP Meter w/ Electrode Arm Tested Working

No probe/electrode is included. Excellent used condition with minimal signs of prior use. Clean housing, clear display, and well-preserved electrode arm. One of the cleaner examples we have encountered.

$179.00
Free ShippingBradenton, US
throwbackfurniturecompany
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100.0%Excellent· 3.8k
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Hanna Instruments Conductivity Tester HI 98308, Great condition In Box.
-44%
UsedBuy It NowBest Offer

Hanna Instruments Conductivity Tester HI 98308, Great condition In Box.

Conductivity tester by Hanna Instruments

$25.00$45.00-44%

You save $20.00

See listingGarden City, US
thriftydealsofamerica
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100.0%Excellent· 402
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*UNTESTED* Thermo Scientific ORION 91-05 Combination pH Electrode - PARTS
For parts or not workingBuy It NowBest Offer

*UNTESTED* Thermo Scientific ORION 91-05 Combination pH Electrode - PARTS

Up for sale is a Thermo Scientific ORION 91-05 Combination pH Electrode. This belonged to my uncle and it was in his storage that we're clearing out. Physical condition is good. I strive for the best service possible.

$59.99
+$8.95Pomona, US
nuckah
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100.0%Excellent· 1.8k
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Thermo Scientific Orion 2 Star pH Benchtop Meter Digital Lab Analyzer, Tested
UsedBuy It NowBest Offer

Thermo Scientific Orion 2 Star pH Benchtop Meter Digital Lab Analyzer, Tested

Model: Orion 2 STAR pH Benchtop. Series: Orion Star Series. Features: Integrated Quick Start Guide, Digital LCD, RS232 Port. We work hard to include a lot of pictures of each item. It is also subject to change during peak periods.

$67.46
Free ShippingSacramento, US
nevraca
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99.7%Excellent· 14.5k
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HACH 9531000 POCKET PRO+ PH TESTER **with Buffer 7 Packet
UsedBuy It Now

HACH 9531000 POCKET PRO+ PH TESTER **with Buffer 7 Packet

HACH 9531000 POCKET PRO+ PH TESTER .

$50.00
+$7.50Woodhaven, US
lolis_shop
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100.0%Excellent· 298
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Thermo Scientific ORION VERSASTAR Pro Meter V18732 & 8172bnwp W/Ph Buffers
UsedBuy It Now

Thermo Scientific ORION VERSASTAR Pro Meter V18732 & 8172bnwp W/Ph Buffers

See pics for details.

$485.00
See listingLouisville, US
rdj1prop000
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100.0%Excellent· 32.0k
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METTLER TOLEDO 8603 SevenMulti PH Conductivity Dual Function Meter POWERS ON BO!
UsedBuy It NowBest Offer

METTLER TOLEDO 8603 SevenMulti PH Conductivity Dual Function Meter POWERS ON BO!

Model Number/MPN: 8603. The plastic housing exhibits slight yellowing due to age and prior use. It does not interfere with screen readability. Unit has been tested for power only.

$225.00
Free ShippingFairfield, US
misterscientific
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100.0%Excellent· 2.9k
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Bluelab Combo Meter pH Conductivity Temperature Tester CM2-1807-0064
UsedBuy It NowBest Offer

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

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

$115.00
+$17.00San Francisco, US
scotdo629
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100.0%Excellent· 16
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Mettler Toledo SevenEasy Digital pH Meter Tested
UsedBuy It Now

Mettler Toledo SevenEasy Digital pH Meter Tested

Tested and working.

$79.99
+$15.00Santa Rosa, US
sonomaresale
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99.8%Excellent· 15.5k
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Advantage Controls HT-3P VA Portable Conductivity Meter Tester TDS Water
UsedBuy It NowBest Offer

Advantage Controls HT-3P VA Portable Conductivity Meter Tester TDS Water

Unit powers on and display functions as shown in photos. Conductivity Range: 50–20,000 µS/cm. Model: HT-3P VA.

$59.99
See listingSaint Louis, US
coppermounta-0
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100.0%Excellent· 113
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HACH Water Distribution Monitoring Panel Power Supply , 6957700
UsedBuy It Now

HACH Water Distribution Monitoring Panel Power Supply , 6957700

$149.88
+$10.00Little River, US
playerservices
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99.5%Excellent· 11.3k
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THERMO SCIENTIFIC 8107BNUMD Orion ROSS Ultra Triode pH/ATC Combination Electrode
UsedBuy It NowBest Offer

THERMO SCIENTIFIC 8107BNUMD Orion ROSS Ultra Triode pH/ATC Combination Electrode

The THERMO SCIENTIFIC 8107BNUMD Orion ROSS Ultra Triode pH/ATC Combination Electrode is a reliable and high-quality measurement tool designed for professionals in various industries. With its brand reputation of THERMO SCIENTIFIC, users can trust in the accuracy and precision of the readings obtained from this electrode. This combination electrode allows for the measurement of pH and ATC levels, making it a versatile tool for ensuring the quality and consistency of products or solutions.

$350.00
Free ShippingRocklin, US
thelabeq
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100.0%Excellent· 966
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Fisherbrand Accumet Liquid-Filled Polymer Body Combination Electrode
-40%
UsedBuy It NowBest Offer

Fisherbrand Accumet Liquid-Filled Polymer Body Combination Electrode

Includes: Combination Electrode with Cable.

$59.40$99.00-40%

You save $39.60

Free ShippingFairfield, US
misterscientific
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100.0%Excellent· 2.9k
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Extech PH220 Waterproof Palm PH Meter With Probe
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UsedBuy It NowBest Offer

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.

$44.99$49.99-10%

You save $5.00

Free ShippingBaroda, US
maverickindustrialsalesTOP
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100.0%Excellent· 30.6k
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Vinmetrica SC-300 Sulfite & pH/TA Wine Analyzer Kit
UsedBuy It NowBest Offer

Vinmetrica SC-300 Sulfite & pH/TA Wine Analyzer Kit

Sodium Hydroxide + TA titrant. - pH probe. - 4.01 + 7.00 pH reference solution. - SO2 Acid + SO2 Titrant + SO2 Reactant. - Formaldehyde + YAN neutralizer.

$600.00
+$15.00Reading, US
controller_leds
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100.0%Excellent· 141
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2x Mettler Toledo Combination pH Sensor Probes 405-DPAS-SC-K8S/425 (Best Offer!)
-10%
UsedBuy It NowBest Offer

2x Mettler Toledo Combination pH Sensor Probes 405-DPAS-SC-K8S/425 (Best Offer!)

Includes: 2 Combination pH Sensor Probes. Model: Combination pH Sensor Probe. pH Range: 0 to 12.0. Model Number/MPN: 405-DPAS-SC-K8S/425.

$179.10$199.00-10%

You save $19.90

Free ShippingFairfield, US
misterscientific
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100.0%Excellent· 2.9k
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HACH SL1000 Portable Parallel Analyzer with Power Adapter
For parts or not workingBuy It NowBest Offer

HACH SL1000 Portable Parallel Analyzer with Power Adapter

Used. Tested for power. Display works with no dead pixels. All buttons respond correctly. Includes brand new aftermarket AC adapter. Battery compartment is clean with no corrosion. The the bottom has two broken off screw holes where the nosecone mounts to the unit.

$499.77
See listingSpring, US
reloved_rerouted
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100.0%Excellent· 3.3k
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Thermo Scientific Orion Star A222 Conductivity Meter w/ Accessories
UsedBuy It NowBest Offer

Thermo Scientific Orion Star A222 Conductivity Meter w/ Accessories

The Thermo Scientific Orion Star A222 Conductivity Meter is a high-quality instrument designed for measuring conductivity in various solutions. This meter comes with accessories included, ensuring that users have everything they need to accurately and efficiently perform measurements. With the trusted Thermo Scientific brand behind it, this conductivity meter provides reliable results for a wide range of applications in industries such as water treatment, environmental monitoring, and quality control. Ideal for professionals looking for precision and ease of use in their work.

$200.00
See listingPortland, US
mur_5200
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100.0%Excellent· 2
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Hach sensION1 Portable pH Meter 51700-60 w/ Manual
UsedBuy It NowBest Offer

Hach sensION1 Portable pH Meter 51700-60 w/ Manual

Includes original Hach instruction manual. No working electrode is included. Working status: Powers on; display and keypad (exit, pH/mV, setup, cal, review, arrows, READ/enter) all function. The probe connector pins are intact and clean (see close-up photo).

$100.00
See listingNorth Weymouth, US
atsea2414
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100.0%Excellent· 141
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