Search our store

£804.30 £965.16 (Inc. VAT)

Product Description

HI-991300 Waterproof pH, EC, TDS and Temperature Meter with Advanced Features

  • Complete with EC/TDS temp probe
  • 2 year manufacturer warranty

The HI-991300 is a light weight, portable pH, conductivity and temperature meter for

portable applications requiring both a pH and conductivity measurement. Applications include

measurements for greenhouses irrigation, hydroponics and groundwater monitoring from

agriculture nutrient pollution.

The HI-991300 meter features two operation button and is simple to use. All operations and

settings, including calibration buffers and temperature scale selections, are made through

these two buttons. It has a waterproof and compact casing rated for IP67 conditions and a

large tri-line display. The meter has automatic pH calibration at one or two points and a

single conductivity calibration. Other user selectable features include different TDS

factors from 0.45 to 1.00, and a range of temperature coefficients from 0.0 to 2.4% for

better conductivity or TDS solution temperature compensation. The meter is supplied with a

multi-parameter probe specifically designed for this meter.

Main features:

  • Simultaneous, pH, EC/TDS and temperature measurements on a large three line LCD


  • Selectable temperature unit
  • pH electrode condition display
  • mV of pH measurement for electrode check
  • Last calibration points pH and EC
  • HI-12883 dedicated pH/EC/TDS/temperature probe
  • Probe quick connect system
  • Battery life indication and low battery detection
  • Auto-off function
  • Keystroke confirmation tone
  • Waterproof casing IP67

Each meter is supplied complete with:

  • HI-12883 pH/EC/TDS probe with built-in temperature sensor, DIN connector and 1mm


  • pH 4.01 & 7.01 buffer sachets
  • HI-70031 1413 µS/cm and HI-70032 1382 ppm 1 sachet of each
  • HI-700601 Electrode cleaning solution (2 sachets)
  • Rugged carrying case
  • Calibration certificate of meter
  • Calibration certificate of probe
  • Instruction manual
  • 100mL beaker
  • Alkaline batteries: 1.5V AAA x 3
  • Instruction manual

About the HI-12883 probe

The HI-12883 multi-parameter probe, incorporates a domed shaped pH bulb rated from 0-13 pH,

a single junction Ag/Cl reference electrode with gelled electrolyte and a retractable cloth

wick junction, a graphite EC/TDS cell, and a temperature sensor in one convenient, rugged

polypropylene body. In addition, to ensure against interference from transient electrical

noise to pH, a solid-state pre-amplifier is integrated into the probe. The probe is rated

from 0 to 50°C.

pH Range -2.00 to 16.00 pH*
pH-mV ±825 mV (pH-mV)
EC 0 to 3999µS/cm (displays µS for µS/cm)
TDS 0 to 2000ppm
Temperature Resolution 0.1°C
pH Accuracy @20°C ±0.02 pH
pH-mV ±1 mV
EC/TDS ±2%F.S.
Temperature Accuracy ±0.5°C
pH Electrode HI-12883 pH/EC/TDS temperature sensor, Quick Connect DIN connector

and 1 m (3.3′) cable (included); please note: HI-12883 is limited to be used from 0 to 13 pH

and from 0 to 50°

TDS Conversion factor Selectable from 0.45 to 1.00 with 0.01 increments
Battery type/life 3 x 1.5V AAA / approx. 600 hours of continuous use
Environment 0 to 50°C (32 to 122°F); RH max 100%
Dimensions 154 x 63 x 30 mm
Weight 196g
Casing ingress protection rating IP67

Please call for more information on this product.

Related Products