Free Coffee Cup Over £250 - Shop Black Friday
All TPI Products

TPI 390a Handheld TDS/Salt Meter

Reward Points (?)

Logged in, worth £2.10, read more.

£126.00 £105.00
Lead Time: 1-6 Days Free UK Delivery* Delivery Options

UK - Zone 1 Orders

England, Wales & most of Scotland.

Free 3-7 Working Day1
Orders Over £99 & Selected Items

Standard 2-7 Working Day1
From £1.99

Tracked 2-3 Working Day

Express Next Working Day

Priority Next Working Day
£14.99 (Pre-Noon)
£19.99 (Pre-10:30am)

Saturday & Sunday
£14.99 (Pre-Noon)

UK - Zone 2 Orders

Highlands, Islands & Northern Ireland.

Free 3-7 Working Day1
Selected Items (Calculated at Checkout)

Standard 2-7 Working Day2
From £1.99

Tracked 2-3 Working Day

International Orders

Delivery is calculated at checkout.

Note: Next day delivery is not guaranteed for orders placed after 3:00pm. Prices Ex VAT.

1, 2 See delivery page for more details.

Advice & Support
Price Match Request

The TPI 390a can be used to determine water purity, calculate the amount of salt in food, measure salt intake, check filtration systems for inefficiency and much more.

This tester checks both the amount of salt in a liquid solution and the value of TDS (total dissolved solids) including calcium, magnesium, carbonate, chloride and nitrate in water. It can test salt content between a range of 0.01 to 5.0% and TDS values across a range of 0 to 999ppm (mg/L).

Using is simple, just clean the sensor thoroughly then place inside a solution. Use the mode function to choose what measurement you'd like and the value will be displayed on the built-in screen. This value can then be temporarily stored on the screen using the data hold button.

TPI 390A Handheld TDS/Salt Meter Key Features

  • Accurate determination of salt content and TDS in water
  • Integrated hanging ring for hands-free use
  • LCD display
  • Hold button freezes value on the screen
  • Measurement mode switch
  • Includes sensor cover
Part Code390a

TPI 390 Technical Specifications

 Salt Measurement  Range: 0.01% to 5.0%
 Resolution: 0.01% / 0.1%
 Temperature Range: 32°F to 158°F (0°C to 70°C)
 TDS Measurement  Range: 0 to 999ppm (mg/L)
 Resolution: 1ppm (mg/L)
 Accuracy: ±3% full scale @ 20°C
 Temperature Range: 32°F to 104°F (0°C to 40°C)
 Temperature Measurment  Range: 32°F to 212°F (0°C to 100°C)
 Accuracy: ±2°F (1°C) (32°F to 158°F / 0°C to 70°C)
 Power Supply  LR44 or LR1154 Button Battery (x3)
 Dimensions  0.65” x 1.25” x 10.03” (16.4mm x 32mm x 255mm)
 Weight  2oz (57g) including button batteries
0 Reviews Overall Rating

Write a Review

Write Your Own Review
You're reviewing:TPI 390a Handheld TDS/Salt Meter
Your Rating

Subscribe to our Newsletter

International Enquiry