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pH meter

pH, conductivity and TDS meters only — pen, portable and benchtop — from Ohaus (ST20, ST300, AB23PH-F, AB33EC-F), Mettler Toledo FiveEasy F20 and FiveGo F2, Eutech PH1710 and CON150, Hanna, Bante and HM Digital, plus Takemura and Rapitest soil testers. Buffers and electrolyte solutions sit under Consumables & Reagents, replacement electrodes under Electrodes & Probes. Free quotation, fast reply.

Buyer guide

Choose the meter, sensor and standards as one measurement system

For a Thai QC laboratory or production team, a useful quotation names the meter, compatible sensor and calibration supplies together. Start with the sample and acceptance requirement, then compare range, uncertainty or accuracy specifications, and the records your method needs.

See the checklist and buying questions

388 products · page 6 of 9

HI8720 Dual Setpoint – ORP analog Controller with 4 to 20mA

Hanna

HI8720 Dual Setpoint – ORP analog Controller with 4 to 20mA

MX-12561

HI8733 EC Meter with Multi-Range 0.0 to 199.9 mS/cm ATC

Hanna

HI8733 EC Meter with Multi-Range 0.0 to 199.9 mS/cm ATC

MX-12563

HI8734 TDS Meter with Multi-Range 0.0 to 19.99 g/L (ppt).

Hanna

HI8734 TDS Meter with Multi-Range 0.0 to 19.99 g/L (ppt).

MX-12564

HI931001 pH and mV Precision Simulator (BNC)

Hanna

HI931001 pH and mV Precision Simulator (BNC)

MX-12611

HI98120 ORP/°C-Tester, waterproof

Hanna

HI98120 ORP/°C-Tester, waterproof

MX-12842

HI98121 COMBO pH/ORP/°C-Tester, waterproof

Hanna

HI98121 COMBO pH/ORP/°C-Tester, waterproof

MX-12843

HI98127 pH/°C-Tester (0.1 pH resolution) – waterproof

Hanna

HI98127 pH/°C-Tester (0.1 pH resolution) – waterproof

MX-12844

HI98128 pH/°C-Tester (0.01 pH resolution) – waterproof

Hanna

HI98128 pH/°C-Tester (0.01 pH resolution) – waterproof

MX-12845

HI98129 COMBO Tester for pH/EC/TDS/C° up to 3999 μS, waterproof

Hanna

HI98129 COMBO Tester for pH/EC/TDS/C° up to 3999 μS, waterproof

MX-12846

HI98130 COMBO Tester for pH/EC/TDS/C° up to 20 mS, waterproof

Hanna

HI98130 COMBO Tester for pH/EC/TDS/C° up to 20 mS, waterproof

MX-12847

EC & pH -Transmitter

Hanna

HI98143-01 EC & pH Transmitter (0–1 V output)

MX-11460

EC & pH -Transmitter

Hanna

HI98143-04 EC & pH Transmitter (0–4 V output)

MX-11463

EC & pH -Transmitter

Hanna

HI98143-20 EC & pH Transmitter (4–20 mA output)

MX-11462

EC & pH -Transmitter

Hanna

HI98143-22 EC & pH Transmitter (4–20 mA output)

MX-11461

HI98308 PWT – Pure Water Tester – Conductivity (up to 99.99 μS/cm)

Hanna

HI98308 PWT – Pure Water Tester – Conductivity (up to 99.99 μS/cm)

MX-12892

HI98309 UPW – Ultra Pure Water Tester – Conductivity (up to 1.999 μS/cm)

Hanna

HI98309 UPW – Ultra Pure Water Tester – Conductivity (up to 1.999 μS/cm)

MX-12893

HI98311 DiST®5 EC/TDS/C°-Tester, (0-3999 μS/cm – 0-2000 mg/l (ppm)) waterproof

Hanna

HI98311 DiST®5 EC/TDS/C°-Tester, (0-3999 μS/cm – 0-2000 mg/l (ppm)) waterproof

MX-12894

HI98312 DiST®6 EC/TDS/C°-Tester, (0.00-20.00 mS/cm – 0.00-10.00 g/l (ppt)) waterproof

Hanna

HI98312 DiST®6 EC/TDS/C°-Tester, (0.00-20.00 mS/cm – 0.00-10.00 g/l (ppt)) waterproof

MX-12895

HI99141 pH Meter / Boiler & Cooling Towers

Hanna

HI99141 pH Meter / Boiler & Cooling Towers

MX-12920

HI99300 EC / TDS / °C Meter to 3999 μS

Hanna

HI99300 EC / TDS / °C Meter to 3999 μS

MX-12928

HI99301 EC / TDS / °C Meter upto 20 mS

Hanna

HI99301 EC / TDS / °C Meter upto 20 mS

MX-12929

Laboratory Calibration Bundle

Hanna

Laboratory Calibration Bundle

MX-12958

Marine Low Range Nitrite Meter – HI767

Hanna

Marine Low Range Nitrite Meter – HI767

MX-12443

Marine pH Meter – HI780

Hanna

Marine pH Meter – HI780

MX-13082

Meat pH Tester with Built-in Specialized Electrode

Hanna

Meat pH Tester with Built-in Specialized Electrode

MX-12981

Mini Conductivity Controller (0 - 1999 μS/cm)

Hanna

Mini Conductivity Controller (0 - 1999 μS/cm)

MX-12983

ORP Controller and Pump

Hanna

ORP Controller and Pump

MX-13016

ORP Transmitter with 4-20 mA Galvanically Isolated Output

Hanna

ORP Transmitter with 4-20 mA Galvanically Isolated Output

MX-13019

PAL-PH PLUS pH Meter

Atago

PAL-PH PLUS pH Meter

MX-10428

Panel-mounted ORP Analog Indicator with Self Diagnostic Test

Hanna

Panel-mounted ORP Analog Indicator with Self Diagnostic Test

MX-13026

Panel-mounted pH Analog Indicator with Self Diagnostic Test

Hanna

Panel-mounted pH Analog Indicator with Self Diagnostic Test

MX-13027

Peristaltic Pump Tubing Kit for PCA Series Process Analyzers (2 pcs)

Hanna

Peristaltic Pump Tubing Kit for PCA Series Process Analyzers

2 variants: 2 · 6

Choose a variant
pH CAL Check Standards for HI97710

Hanna

pH CAL Check Standards for HI97710

MX-13049

pH Calibration Bundle, pH 4 & 7

Hanna

pH Calibration Bundle, pH 4 & 7

MX-13050

pH COMBINATION ELECTRODE (BASIC GLASS), W/ BNC CONNECTOR (SET)

Suntex

pH COMBINATION ELECTRODE (BASIC GLASS), W/ BNC CONNECTOR (SET)

MX-13856

pH COMBINATION ELECTRODE (BASIC PLASTIC), W/ BNC CONNECTOR (SET)

Suntex

pH COMBINATION ELECTRODE (BASIC PLASTIC), W/ BNC CONNECTOR (SET)

MX-13857

pH Controller and Pump

Hanna

pH Controller and Pump

MX-13055

pH Electrode with Matching Pin for Continuous Flow-thru Monitoring-3m (9.84')

Hanna

pH Electrode with Matching Pin for Continuous Flow-thru Monitoring

2 variants: 3m / 9.84 · 5m / 16.4

Choose a variant
pH Meter for Milk Samples – HI981034

Hanna

pH Meter for Milk Samples – HI981034

MX-12831

pH Meter for Wine – HI99111

Hanna

pH Meter for Wine – HI99111

MX-13316

pH Protective Green Sleeves (3 pcs.)

Hanna

pH Protective Green Sleeves (3 pcs.)

MX-13092

pH Protective White Sleeves (3 pcs.)

Hanna

pH Protective White Sleeves (3 pcs.)

MX-13093

pH Transmitter with 4-20 mA Galvanically Isolated Output

Hanna

pH Transmitter with 4-20 mA Galvanically Isolated Output

MX-13094

PH-200 Handheld pH Meter

HM Digital

PH-200 Handheld pH Meter

MX-10498

PH-80 Handheld pH Meter

HM Digital

PH-80 Handheld pH Meter

MX-10748

pH/EC/TDS/Temperature meter with CAL Check

Hanna

pH/EC/TDS/Temperature meter with CAL Check

MX-13141

Buyer guide

Five decisions to make before comparing models

01

Parameters, units and expected range

List pH and conductivity separately, including the expected range in µS/cm or mS/cm. If reporting TDS, record the conversion factor required by your method. A conductivity-derived TDS result does not identify individual dissolved substances.

02

Match the sample to the sensor

Give the sample type, temperature and container dimensions, plus the existing meter and connector if replacing a probe. A milk sample, a viscous product and low-conductivity water can need different sensor designs. Confirm the exact electrode and meter combination before ordering.

03

A catalog example: HI98130

The Hanna HI98130 listed in our catalog combines pH, EC, TDS and temperature. Its EC range is 0.00 to 20.00 mS/cm with 0.01 mS/cm resolution. That resolution equals 10 µS/cm, so a buyer needing finer low-conductivity readings should specify that requirement before choosing this high-range tester.

04

Budget for the calibration supplies

Choose buffers that cover the expected sample pH and that the meter recognizes. Include the required conductivity standard, electrode storage and cleaning solutions, and replacement-sensor needs. Ask for lot, expiry and certificates where required; an included starter sachet is not a recurring supply plan.

05

Field use, records and receipt

Specify portable or benchtop use, cable length, power and the output format you need. Ask the quotation to separate the instrument, sensor, standards and any calibration service. On receipt, check the model and kit suffix, included items and relevant certificates against the order.

Include this in the quote request

  • Sample or process, expected pH and conductivity range, and measurement temperature
  • Required resolution and accuracy specification, units and any TDS conversion factor
  • Existing meter model, sensor part number and connector, or a complete new system
  • Portable or benchtop use, container size, cable length and data-export needs
  • Buffers, conductivity standards, storage and cleaning solutions; required certificates
  • Quantity, delivery province, required-by date and procurement reference or TOR if used

Common pH and conductivity meter questions

Does 0.01 pH resolution mean ±0.01 pH accuracy?

No. Resolution is the displayed increment. For example, Hanna specifies 0.01 pH resolution and ±0.05 pH accuracy at 25 °C for HI98130. Compare both values and the conditions stated by the manufacturer against your method.

Can one instrument measure both pH and conductivity?

Yes, some models can. HI98130 is one catalog example, but the required ranges and sensor suitability still decide whether it fits. A combined tester does not make every pH electrode or conductivity application interchangeable.

Is a TDS reading the same as a chemical analysis of the water?

No. On a conductivity-based tester, TDS is calculated using a conversion factor. Document that factor when comparing results across instruments; use the relevant analytical method when you need the concentration of a particular substance.

Which buffers and accessories should appear in the quotation?

Request buffers that bracket the sample range and match the meter settings, the specified EC standard where needed, and suitable storage and cleaning solutions. State required pack sizes and certificates. Confirm the exact kit contents rather than assuming a meter includes a full year of consumables.

Continue the measurement setup

Official selection references

The HI98130 example follows its manufacturer specification. The buffer-selection references explain calibration range and solution care; the quoted sensor and method still determine the final setup.

This guide helps define a quotation. It does not replace your laboratory method, quality procedure or the current instructions for the selected instrument and sensor.