HI-991300 Waterproof pH, EC, TDS and Temperature Meter with Advanced Features
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.
Each meter is supplied complete with:
- HI-12883 pH/EC/TDS probe with built-in temperature sensor, DIN connector and 1mm cable
- 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)
- 100ml beaker
- Alkaline batteries: 1.5V AAA x 3
- Rugged carrying case
- Calibration certificate of meter
- Calibration certificate of probe
- Instruction manual
Main features:
- Simultaneous, pH, EC/TDS and temperature measurements on a large three line LCD display
- 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
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.
Specification:
| 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 Range | -5.0 to 105.0°C | |
| pH Resolution | 0.01 pH | |
| pH-mV Resolution | 1 mV | |
| EC | 1µS/cm | |
| TDS | 1ppm (mg/L) | |
| 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 | 196 g | |
| Case Protection Rating | IP67 |
Frequently Asked Questions
Clear answers to help you choose the right water testing solution with confidence
Which brands of water testing kits do you supply?
Do you provide kits for both home and professional use?
Yes — whether you’re a pool or spa owner, aquarium keeper, utility company, or a university laboratory, we have the right solution for your needs.
Can I arrange servicing or calibration for my photometer?
Absolutely. We also provide servicing and calibration to keep your photometers accurate and reliable.
How quickly do you dispatch orders?
Orders placed before 2:30 pm (Monday–Friday) are dispatched the same day. We also ship on Saturdays for your convenience.
Which couriers do you use for delivery?
We deliver through UPS, DPD, and Royal Mail. You can also choose to upgrade to next-day delivery at checkout.
What is your return policy?
We accept returns within 14 days of delivery provided the items are unused, in their original packaging, and in resalable condition. Please contact our team before returning any items.
Can I place bulk or business orders?
Yes, we welcome bulk, trade, and institutional orders. For tailored pricing or large quantities, please get in touch with us directly.
How can I get help if I’m unsure which kit to buy?
You can call us at 📞 +44 (0)115888 2726 and our team will guide you in choosing the most suitable kit for your needs.