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Home  discus essentials  monitors + test KIts  combination meters  hm digital com-300

hm digital com-300

hm digital com-300
£102.00
 (inc. VAT at 20%)
In stock
DE-0036
The COM-300 is a very reliable and efficient pH/EC/TDS/Temp meter ideal for all aquatic applications.

  • Features
  • Specifications
  • Delivery Information
  • More Info


- Measures Potential Hydrogen (pH), Electrical Conductivity (EC), Total Dissolved Solids (TDS), Salinity and Temperature
- Five scales: pH, µS, mS, ppm 0.5 (NaCl) Scale & 0.7 (442™) Scale
- Automatic Temperature Compensation (ATC) using three temperature coefficients
- Waterproof housing (IP-67 rating)
- Digital Calibration (push button) to any point within the meter’s range
- Auto-off function, data-hold function and low-battery indicator
- Display: large and easy-to-read LCD screen includes simultaneous temperature reading
- Replaceable Sensor (model SP-CP)
- Factory Calibrated (pH/EC/TDS)
- Includes translucent cap, 2 (AAA) alkaline batteries, pH 4 & 7 calibration solutions, pH storage solution and lanyard


- pH Range: 0 – 14 pH
- EC Range: 0 – 9990 µS; 0 – 9.99 mS
- TDS Range: 0 – 8560 ppm (0.7 Scale); 0 – 5000 ppm (0.5 Scale)
- Temperature Range: 0-55 °C; 32-130°F
- Resolution: 0-99: 0.1 µS/ppm/ 0.01mS ; 100-999: 1 µS/ppm; 1000-9990: 10 µS/ppm. Temp. resolution is 0.1 °C/F
- Accuracy: +/- 2%
- EC to TDS Conversion Factor: Non-linear conversions for KCl, 442TM or NaCl solutions, selected by the user.
- Probe: Detachable platinum electrodes & pH glass sensor with reference tube electrodes
- Housing: IP-67 Waterproof (submersible; floats)
- Power source: 2 x Triple A (AAA) included
- Dimensions: 18.5 x 3.4 x 3.4 cm (7.3 x 1.3 x 1.3 Inches)
- Weight: 101.5g (3.6 oz)


- Orders to £49 will be charged £4.95 for delivery - Royal Mail

- Orders over £49 include free standard delivery - Royal Mail or APC depending on value and postcode.

- Exception to free delivery is frozen food as this requires bespoke packaging and a next day service, usually APC, but also Royal Mail to some postcodes

- If ordering frozen food, you can add dry goods of any value with out additional delivery fees.

- We cannot ship perishable goods to Scottish Islands, Isle of Man, Jersey, Guernsey or Northern Ireland - or the following postcodes AB37-38, AB41-56, FK19-21, HS1-9, KA27-28, IV1-20, IV21-63, KW1-18, PA20,21,23-35 36-78, PH15-27,30-45,49-50, ZE1-3

- If in doubt please call 01323 483689 for clarification, or devotedlydiscus@gmail.com

- If collecting goods from shop, please call 01323 483689 to check availabilty reserve stock.

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