# Handheld W-STAR water tester EZ9909SP — 5-in-1 pH, conductivity, TDS, salinity, temperature measurement

**URL:** https://aio.lv/en/product--w-star-ez9909sp--11657547
**Data updated:** 2025-12-17 20:44 (EET)
**Category:** Measuring tools
**Manufacturer:** W-STAR
**Manufacturer code:** EZ9909SP
**EAN:** 8594164994142
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

The W-STAR EZ9909SP is a handheld 5-in-1 water tester designed for measuring pH, electrical conductivity, total dissolved solids (TDS), salinity and temperature. Intended for pools, wells and general water quality checks, it offers quick on-site readings to monitor water safety and treatment needs. Suitable for hobbyists, pool owners and field technicians who need portable, multiparameter testing.

## Long description

Digital water tester 5in1 EZ9909SP measures pH, conductivity (EC), TDS, salinity and temperature. Designed for use in swimming pools, wells and laboratory environments, the EZ9909SP offers fast readings on a clear color display without the need for test strips. The compact handheld device comes with an electrode protective cover and accessories for calibration solution preparation.
Advantages
The EZ9909SP provides five measurements in one compact instrument, reducing the need for multiple devices. Its large LCD color display and fast response make readings easy to interpret. Automatic temperature compensation (ATC) ensures more accurate conductivity and TDS values, while manual pH calibration allows adjustment for greater precision. Battery-powered operation with LR44 cells makes the tester portable and convenient for field or laboratory use.
Key specifications
Measured values: pH 0.00–14.00
Conductivity (EC): 0–20000 µS/cm
TDS: 0–10000 ppm
Salinity: 0.00–25.00 %
Temperature: 0–60 °C
Display: Large LCD color display
Features: Automatic temperature compensation (ATC), manual pH calibration, low battery indication
Power supply: 3 × LR44 batteries
Dimensions: 183 × 37 mm
Weight: 80 g
Package contents: EZ9909-SP tester, electrode protective cover, bags for calibration solution, instructions for use
How to use
Install three LR44 batteries and attach the electrode protective cover. Rinse the electrode with distilled water before measurement and immerse the sensor into the sample to the recommended depth. Allow the reading to stabilise on the display; use manual pH calibration with supplied calibration solution bags as needed to ensure accuracy. After measurements, rinse and dry the electrode, replace the protective cover and store the tester in a dry place.
Recommendations
For reliable results, calibrate the pH electrode regularly using appropriate buffer solutions prepared with the supplied calibration bags, avoid extreme contamination of the sensor, and replace batteries when the low battery indicator appears.

## FAQ

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All W-STAR products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized W-STAR service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

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