In this guide we’ll take a look at the best compost thermometers for the UK market.
I’ve compared accuracy, lens quality, build quality and cost
to give you my top recommendations.
What Is The Best Compost Thermometer?
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More Detailed Compost Thermometer Reviews
Green Wash Compost Thermometer
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Green Wash Compost Thermometer Review
This Green Wash Compost Thermometer is well made with a stainless-steel body and a 40 cm long probe. The 50mm dial is clear and easy to read. I did find that when left in the heap, the dial misted up a little with condensation and became difficult to read.
However, the measure does react quickly to changes in temperature, so you could just insert this compost thermometer when you needed to check the temperature and keep it in a dry place when not in use. The measurements are in Celsius only.
Overall this is an accurate and easy to use compost thermometer, and it’s the best compost thermometer to buy on a budget.
ETI Ltd Stainless Steel Compost Thermometer
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ETI Ltd Stainless Steel Compost Thermometer Review
This ETI Ltd Stainless Steel Compost Thermometer has a 50mm dial and a 50 cm probe allowing you to read it easily and test the temperature deep within the pile.
The dial of this compost thermometer is clear and easy to read and has a colour coded scale that measures from 0 – 100°C and also indicates when the pile is warm, active or hot. The measurements are shown in Celsius only. The probe and dial are securely attached and well made. I left the unit in my compost bin over a week and found no problems with condensation.
This is a great value compost thermometer that works well, doesn’t mist up and is clear and easy to read.
Compost Thermometer Buying Guide
There are several key factors to take into consideration when choosing the best compost thermometer for your needs.
Firstly, check that the dial is clear and easy to read and that the measurements are in the unit you prefer.
Secondly, ensure that the compost thermometer is made from strong rust proof material such as stainless steel and that the dial is sealed to prevent water from seeping in. The best compost thermometers have an IP55 rating which guarantees against moisture getting into to the dial.
Bear in mind that the longer the probe, the closer to the centre of the heap you will be taking measurements from. Your measurements don’t need to be right at the centre but taking measurements close to the surface will not give accurate results.
FAQs
How do you use a compost thermometer?
Simply insert the compost thermometer into the pile as far as it will go. Wait until the hand on the dial stops moving and make a note of the temperature. It is advisable to check the reading in several areas of the compost heap as there is not always a uniform temperature across the pile and you may occasionally find cold or hot spots.
How often should I turn my compost and what temperature should my compost be at when I turn it?
Ideally, you should turn your compost after each burst of heat. When the temperature of your pile reaches 130-140°F (55-63°C) this is the ideal time to turn. You should then leave it until the temperature rises again, which usually takes between 5 and 7 days.
How do I know when my compost is ready for use?
To ensure that all diseases and weeds are killed you should monitor your compost pile carefully to ensure it has reached a temperature or between 140 – 150 °F (60 – 65°C) for three to four days. It is then safe to use. However, your compost will benefit from being left for a few days to cure and cool down before use. Do not allow your heap to remain at temperatures above 150°F (65°C) for more than a few hours as this could cause beneficial microbes to begin to die off.