Waterproof Portable pH/Temperature Meter - IC-HI991001
ORDER ME IN
Order Me In, Once ordered this item will likely dispatch before the 17th of September 2025, call 1300 737 871 (NZ 0800 737 871) to confirm.
The HI991001 is a compact, waterproof, portable pH/temperature meter built for harsh environments and prolonged use outdoors.
- -Supplied complete including a rugged carrying case and a unique titanium body pH electrode that has a built-in temperature sensor.
- -Very simple to use with only two buttons needed to operate.
- -Has prolonged battery life f 1400 hours of continuous use.
Regular price
$689.01 AUD
+ GST
$757.92 AUD Inc. GST
$757.92 AUD Inc. GST




The HI991001 meter features a large multi level LCD screen which displays both pH and temperature readings simultaneously with 0.01 pH resolution and an accuracy of 0.02 pH. The LCD screen also has indicators for calibration status and stability, as well as on-screen tutorial messages.
The HI991001 has many advanced features that are found in more expensive portable instrumentation including automatic calibration, buffer recognition,and temperature compensation. The battery percent level is displayed at start up alerting the user to the remaining battery power that is available.
The HI991001 is supplied with the pre-amplified titanium body pH/temperature electrode. The titanium body is resistant to many aggressive chemicals including those used in plating and chemical manufacturing. The titanium body acts as a matching pin that, together with the built-in amplifier, will help reduce the effects of electrical noise on the high impedance pH measurement. Examples of sources of electrical noise include rectifiers, motors and ballasts.
The HI12963 pH electrode also features an extractable cloth junction. The extractable cloth junction of the HI12963 allows for the renewing of the junction.
3 Year Warranty (2 Year Manufacturer Warranty + Bonus 1 Year Instrument Choice Warranty)
HI991001 Features
- Waterproof: Designed to float if accidentally dropped in a tank
- Expanded pH Range: pH range is from -2.00 to 16.00 pH
- Automatic Two-Point Calibration: One or two-point calibration is automatic to two selectable buffer sets (4.01, 7.01 and 10.01 or NIST 4.01, 6.86, and 9.18)
- Automatic Temperature Compensation: All readings are compensated for variations in temperature. Temperature displayed in C or F along with pH reading
- Stability Indicator: Meter displays a clock tag that will disappear when the reading has achieved stability
- HOLD button: Freezes reading on the display to allow recording of measurement
- BEPS (Battery Error Prevention System): Meter will automatically shut off if there is not enough power to get an accurate measurement
- Battery % level at startup
- Low Battery Indicator: When the level is below 5%, the battery symbol on the LCD blinks to indicate a low battery condition
- Auto-Off: Meter automatically shuts off after 8 minutes of non-use to maximize battery life
Standard package includes:
The HI991001 is supplied with HI12963 pH probe with internal temperature sensor, HI70004 pH 4.01 buffer sachet (20 mL x1), HI70007 pH 7.01 buffer sachet (20 mL x1), HI700601 electrode cleaning solution sachet (2 x 20 mL), 100 mL beaker (1), calibration certificates for both meter and probe, batteries, instructions, and rugged thermoformed carrying case.
Specifications
pH Range
|
-2.00 to 16.00 pH; -2.0 to 16.0 pH
|
pH Resolution
|
0.01 pH; 0.1 pH
|
pH Accuracy
|
+/- 0.02 pH; 0.1 pH
|
pH Calibration
|
automatic, at one or two points with two sets of standard buffers (pH 4.01 / 7.01 / 10.01 or pH 4.01 / 6.86 / 9.18)
|
pH Temperature Compensation
|
automatic 5.0 to 105.0 C/23.0 to 221.0 F
|
pH CAL Check (electrode diagnostics)
|
probe condition indicator
|
pH Sensor Check
|
yes
|
mV Range
|
+/- 825 mV (pHmV)
|
mV Resolution
|
1 mV (pHmV)
|
mV Accuracy
|
+/- 1 mV (pHmV)
|
Temperature Range
|
-5.0 to 80.0 C / 23.0 to 176.0 F
|
Temperature Resolution
|
0.1 C / 0.1 F
|
Temperature Accuracy
|
+/- 0.5 C (up to 60 C); +/- 1.0 C (outside) / +/- 1 F (up to 140 F); +/- 2.0 F (outside)
|
pH Electrode
|
HI12963 pre-amplified pH probe with internal temperature sensor, quick connect DIN connector and 1 m (3.3) cable (included)
|
Automatic Shut-Off
|
user selectable
|
Battery Type/Life
|
1.5V (3) AAA / approximately 1400 hours of continuous use
|
IP Protection
|
IP67
|
Environment
|
0 to 50 C (32 to 122 F); RH max 100%
|
Dimensions
|
154 x 63 x 30 mm (6.1 x 2.5 x 1.2)
|
Weight
|
196 g (6.91 oz.)
|
Battery Type/Life
|
1.5V AA batteries / approximately 200 hours of continuous use without backlight (50 hours with backlight)
|
Environment
|
0 to 50 C (32 to 122 F); RH 100%, IP67
|
Dimensions
|
185 x 93 x 35.2 mm (7.3 x 3.6 x 1.4)
|
Weight
|
400 g (14.2 oz)
|
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