HM Digital PH-200 PH Meter, White, 3.3" x 8.5" x 2"
£61.49 inc. VAT (£51.24 ex. VAT)
- Premium quality at just £61.49 inc. VAT
- Free UK delivery on every order
- 30-day no-quibble returns under Consumer Rights Act 2015
- Secure checkout with buyer protection on every purchase
Why Choose HM Digital P
A serious upgrade from strips and budget pens
The hm digital ph-200 is built for UK users who test liquids regularly and want more confidence than disposable strips or unbranded pH pens can provide. As a waterproof pH meter with a dedicated handheld format, it is designed for repeat use in real working environments such as hydroponic systems, aquariums, pools and water treatment setups.
Digital pH and temperature readings in one meter
This digital pH temperature meter gives you quick access to both pH and temperature readings, helping you make better adjustments when conditions change. Automatic temperature compensation supports more stable pH measurement across varying sample temperatures, which is especially useful for nutrient solution testing, aquarium maintenance and routine water quality checks.
Made for dependable long-term use
Unlike many low-cost sealed pens, the PH-200 is positioned as a replaceable electrode pH meter, giving it stronger long-term value for regular users. Waterproof protection supports confident handling around wet worktops, tanks and mixing areas, while the branded HM Digital format offers a reassuring middle ground between generic budget options and premium-priced rivals such as Apera and Bluelab.
Ideal for mixed-use UK buyers
If you need one handheld pH tester for several applications, the HM Digital PH-200 waterproof pH and temperature meter UK buyers look for is a practical fit. It suits hobbyist-to-professional use where repeatability, portability and straightforward calibration matter more than gimmicks. For buyers comparing options, it is a smart choice between cheap throwaway-style testers and higher-cost specialist systems.
Technical Specifications
- pH Range
- 0.00 to 14.00 pH
- pH Resolution
- 0.01 pH
- pH Accuracy
- ±0.02 pH
- Temperature Range
- 0.0 to 80.0°C
- Temperature Resolution
- 0.1°C
- Calibration
- Auto 3-point at pH 4.0, 7.0 and 10.0
- Waterproof Rating
- IP67
- Power
- 2 x 1.5V AAA batteries
Price Comparison
See how our price compares across UK retailers
| Retailer | Price | Delivery | Warranty |
|---|---|---|---|
| HM Digital P UK (Specialist)BEST | £61.49 | FREE | 12 months + UK Support |
| eBay (est.) | £76.86 | Varies | Seller dependent |
| High Street RRP | £98.38 | N/A | Varies |
Prices checked 21 July 2026. Prices may vary.
Customer Reviews
I bought this for my tropical aquarium after getting fed up with strips. The readings settle quickly, and having both pH and temperature on one unit makes weekly checks much easier.
Arrived quickly from the UK and felt far better made than the cheap pens I have used before. The waterproof body is reassuring when testing hydroponic nutrient solution around the reservoir.
For light laboratory and water sampling work, this is a very capable handheld meter. The automatic temperature compensation is a useful feature and the replaceable electrode gives it better long-term value.
A solid pH-200 pH meter for pool and pond checks, and definitely easier to trust than colour strips. The only downside is that you do need to stay on top of calibration if you want the best accuracy.
I was comparing this with Apera and some generic pens, and this felt like the right middle ground. It gives me the confidence of a branded meter without paying top-end money.
Using it as a water testing pH meter for our small treatment setup and it has been reliable so far. I would have liked calibration solutions included in the box, but the meter itself performs very well.
Excellent value for money if you test regularly. I use it for hydroponics and aquarium water, and the waterproof design plus clear digital display make it much more practical than strips.