eXact Micro 20 Photometer Bluetooth Digital Water Tester

£695.99 Inc VAT (£579.99 Ex VAT)


The eXact® Micro 20 is the ultimate Digital Water Quality Tester which tests accurately and reliably more than 30 elements/contaminants in water.

This handy device delivers fast and accurate results; and is surprisingly easy to use in 3 simple steps:

  1. Fill the compartment with a small amount of your water sample.
  2. Dip the test strip or fluid into it.
  3. Read the result on the display or in the app on the smart device.

To view the full instructions, please Click Here.

The eXact® Micro 20 is:

  • A great alternative to water testing strips for users who want accurate results (displayed in steps of either 1 or 0.01 – depending on contaminant), this includes tests for total alkalinity, free chlorine, total chlorine, copper, total hardness, nitrate, nitrite, pH, total iron, bromine
  • A cost-effective solution for regular water testing, with a warranty of 2 years
  • A testing device for contaminants which can not be tested with traditional strips, including fluoride, aluminium, ammonia, cyanide and manganese

For a complete range of potential testing parameters please see the table below. The price quoted includes the price for the unit, including 2 x free reagents for free and combined chlorine. Additional reagents can also be purchased on our website (prices and details in the table below). Please contact us to find out more or ask for other reagents which may not be available online.

Suitable for: any water samples, including fresh water (including drinking, tap, spring, well, stream, rain), pools & spas, ponds, aquariums (fresh and marine/salt water); food process water, environmental & educational testing (Please note, NOT suitable for cloudy water)

Ideal for: Field, On-site and Lab Use

Includes: 1 photometer Micro 20 with carry case, instructions, cleaning brush, plastic stirrer; plus 2 free reagents: Free Chlorine (DPD-1) (486637-25) 25 Tests and Combined Chlorine (DPD-3) (486638-25) 25 Tests, Mini Dilution Kit II (487202)

Please note, additional reagents are on our website, please also see table below.

Testing Range: between 1 and 0.01, please see table below

Warranty: 2 years

Wireless: requires Bluetooth 4.0 and Android 4.3 and up or Apple iOS 6.1 and up

Detailed Description:

The eXact® Micro 20 with Bluetooth SMART is a powerful dual wavelength (525 nm or 638 nm) photometer tests over 30 water quality parameters with lab-quality accuracy. It also connects wirelessly to your smart device to transfer test results. This makes it an ideal tool for everyone who needs to record water test results. Results will display simultaneously on the Micro 20 photometer and in the app.

It features a narrow band wavelength filter for improved accuracy; long-life LEDs and a built-in cell for ultra-performance. This high quality unit self calibrates (no need to return it to the manufacturer) and automatically selects the optimal wavelength for each parameter.

Incorporated into the testing procedure is a patented Reagent Delivery Method for streamlined testing for technical and NON-technical users. Compliance with EPA, ISO and DIN specifications for Chlorine testing attests to the meter’s quality. It comes with a 2-year warranty.

This is the preferred tool for digitally accurately and quickly testing water:

  • Pre–programmed to test over 30 water quality parameters with lab–quality accuracy
  • Fast, accurate results with EZ-3 Method
  • Test results can be shared in real–time via e–mail or exported to a CSV spreadsheetwith time–date GPS locations when used with the eXact iDip® app
  • Easy to use eXact® Strip/Photometer reagent delivery system (U.S. Patent #7,333,194) delivers reagents safely without the need to count drops or crush tablets.
  • Dual wavelength photometer the eXact®Micro 20 uses the same high quality 525nm and 638nm reagents as our other popular photometers for improved accuracy.
  • high precision reading
  • Built-in, permanent 4 ml cell for water samples (no glass or plastic cells; simply fill or dip into water)
  • Automatic countdown timer
  • 1080 test memory (saves last 20 tests per menu)
  • 3 simple steps: 1.Fill, 2.Dip and 3.Read
  • No-slip grip housing
  • Lightweight (only 170g/6oz with batteries installed)
  • Waterproof meter & floats
  • Easy-to-read LCD display
  • Auto Calibrated Meter
  • Environmentally friendly (recyclable parts & uses 60% less reagents than 10ml sample tests)
  • No colour matching
  • CE certification
  • 2 – year Warranty

The eXact Micro 20 Digital Water Tester can be used to test a wide range of water samples for:

Reagent Part No. Range Resolution No of Tests per Reagent
Total Alkalinity 486641 8-200ppm (pool), 9-210 (drinking) 2 100
Aluminium 486821 0.01 – 1.2ppm 0.01 50
Ammonia 486654 0.02 – 2.4ppm 0.01 25
Biguanide 486810 1.6 – 210ppm 1 50
Bromine (DPD-1) 486636 0.01 – 12ppm 0.1 100
Calcium Hardness (as CaCO3) 486629 16 – 400ppm 1 50
Chloride (as NaCl) 486757 1-330ppm 5 25
Chloride (as NaCl) high range 486757 26 – 6600ppm (with Mini Dilution Kit #487202) 8 25
Chlorine Dioxide (DPD-1) 486633 0.01 – 10ppm 5 100
Free Chlorine (DPD-1) 486637 0.01 – 6.2ppm 0.01 100
Total Chlorine, high range
486672 1 – 300ppm 1 100
Chlorine, Combined (DPD-3) 486638 0.01 – 6.2ppm 100
Chlorine, Total (DPD-4) 486670 0.01 – 6.2ppm 0.01 100
Chromium (IV) (as CaCO3) 486614 0.01 – 1.8ppm 0.01 50
Copper (Cu+2) 486632 0.01 – 11ppm 0.01, 0.1 50
Cyanide (as CaCO3) 486812 0.01 – 1.1ppm 0.01 50
Cyanuric Acid III 481652-III 1 – 110ppm 1 60
Fluoride (as CaCO3) 486643 0.04 – 1.5ppm 0.01 25
Hydrogen Peroxide 486648 0.3 – 100ppm 0.01 50
Total Hardness, high range (as CaCO3) 486656 60 – 600ppm 1 50
Total Hardness, low range (as CaCO3) 486630 1 – 80ppm 100
Manganese 486606 0.01 – 1.5ppm 0.01 24
Molybdate 486653 0.01 – 3ppm 50
Nitrate (as NO3) 486655 0.1 – 45ppm 0.01, 0.1 50
Nitrite (as NO2) 486623 0.01 – 1.8ppm 0.01 50
Ozone (DPD-4) 486634 0.1 – 2ppm 0.01 100
Peracetic Acid (DPD-4) 486674 0.01 – 6ppm 100
Permanganate (DPD-1) 486626 0.01 – 5ppm 100
pH 486639 pH 5.8 – 8.5 0.2 100
Acid pH 486624 pH 3.2 – 6 0.3 50
Alkali pH 486609 pH 7.2 – 9.8 0.3 50
Phosphate 486814 0.03 – 4.4ppm 0.01, 0.1 50
Quaternary Ammonia 486823 2 – 80ppm 100
Sulfate (as SO4) 486608 2 – 210ppm 10 50
Sulfide (as S2-) 486818 0.01 – 1.6ppm 0.01 50
Total Iron 486650 0.03 – 6ppm 0.01, 0.1 50

*please note, prices are approximates and may vary depending on shipping costs and general price changes. Bulk discounts are available.

Please check availability before ordering online as some reagents may not always be in stock.

Not sure which Digital Water Tester is the right one for you? Compare our range here.

MPN: 486700-BTK

Additional information

Weight 2000 g
Each kit contains:

1 photometer Micro 20 with carry case, instructions, cleaning brush, plastic stirrer; plus 2 free reagents: Free Chlorine (DPD-1) (486637-25) 25 Tests and Combined Chlorine (DPD-3) (486638-25) 25 Tests, Mini Dilution Kit II (487202)


eXact Digital Tester


  • We ship orders daily Monday – Friday (except bank holidays)
  • Fast & efficient shipping
  • Order by 12 noon for same day dispatch
  • All orders are shipped from United Kingdom (UK)

UK Shipment Options:

  • FREE Super Saver (3-5 business days): £0.00
  • Royal Mail 1st Class (1-2 business days): £1.99
  • Royal Mail Tracked 24  (1-2 business days): £2.99
  • DHL Courier (1-2 business days): £6.98
  • Special Next Day (Monday to Friday): £9.98

Order by 12 noon for same day despatch. For urgent despatch after 12 noon, please call us on 01933 664746.

European Union (EU) Shipment Options:

  • European International Shipping (5 – 10 Days)
  • International Tracked
  • DHL International Tracked

All orders to the EU are shipped including VAT so no duty or VAT to pay to customs

Please feel free to contact us for more information about international shipping before placing an order.

Rest of Europe, Australia, New Zealand and USA Shipment Options:

  • International Shipping (5 – 20 Days) from £0.80 (can vary due to exchange rates)
  • International orders outside the European Union and Great Britain are sent excluding VAT. Local VAT as well as potential import/duty fees are charged by local customs on point of import. Customs fees vary depending on product, however most of our products (ie water test kits) are duty free (0%). Please feel free to contact us for more information (ie HS Code) before placing an order.


  • We can ship worldwide – please contact us to obtain a quote for your destination

Please note:

UK Mainland Shipping Provided by:

  • Free Super Saver (3-5 business days) – This is a free service using 2nd Class Royal Mail and usually arrives within 3-5 working days. In the event that no one is at home to take delivery, a card will be left for collection from your local post office or courier.
  • Royal Mail 1st Class (1-2 business days) – This service uses 1st Class Royal Mail, costs a small fee and usually arrives within 1-2 working days. In the event no one is in to take delivery, a card will be left for collection from your local post office or courier.
  • Royal Mail Tracked 24 (1-2 business days) – This service uses 1st Class Royal Mail tracked service, costs a small fee and usually arrives within 1-2 working days. In the event no one is in to take delivery, a card will be left for collection from your local post office or courier.
  • DHL Courier (1-2 business days) This express service is usually a next working day delivery (depending on location). Being a fully tracked service, you will need to be in to accept delivery, otherwise they will attempt delivery again the following working day or you can collect from your local depot.
  • Special Next Day (Monday to Friday) – This express service by courier or Royal Mail Special Delivery, is a next working day and fully tracked service. You will need to be in to accept delivery, otherwise they will attempt delivery again the following working day or you can collect from your local depot.
  • Higher value orders may be shipped using courier at no extra cost to ensure safe arrival.
  • Mainland UK includes England, Scotland, Wales, Northern Ireland and all BFPO addresses.

International Delivery provided by:

  • Royal Mail International – Depending on the order value this is part-tracked delivery service from Royal Mail. Delivery can take up 2 weeks (depending on the destination country), however for Europe delivery times are aprox 5-7 days.
  • International Courier Delivery – Depending on the order value this is a fully tracked service and can take up to 1 week (depending on the destination country).
  • If the country that is receiving your order has strong regulations regarding the importation of goods including nutritional supplements, SimplexHealth cannot be held responsible for any additional fees incurred by Customs and/or Quarantine scanning. We also cannot accept responsibility for items returned by customs.

All delivery times are estimates and depend on local courier services as well as processing times through customs (where applicable).

I have not received my order what do I do?

If you have not received your goods after 14 working days, then please contact us and we will chase your delivery. The quickest way is to contact the team by email (quoting your order number and contact details) or call us on +44 (0) 1933 664746 (Monday to Friday 9am – 5.00pm). It is out of our control if delivery gets delayed due to postal strikes or natural disasters, however we will do our best to help solve any problems with lost items.

Returning an item

We want you to be happy with your purchase but understand that sometimes you may need to exchange or return an item. Follow our returns procedure if you would like to return a faulty, damaged, duplicate, incorrect or unwanted item. This can be viewed here or under Returns at the bottom of the screen.