Display Type: Digital, Model Number: EZ-9909A, Weight: 170g, Waterproof rating: IP67, Measuring range of table salinity: 0.00-25.00%, Display: Support backlight, The measurement range of sea water salinity: 10.1-200.0ppt., Battery: 3x 1.5V LR44 Button Battery (not includes), 5 in 1 function: TDS/EC/PH/Salinity/Temperature Tester, 5.01-25.00% (±1%), Accuracy: 0.01-5.00% (±0.1%), Display size: 33*24mm, Size and weight: 183*37*37mm(7.2*1.5*1.5in)/90g(3.2oz), PH measurement range: 0.01-14.00pH, EC measuring range: 0-10000US/cm, TDS measurement range: 0-1000ppm.
Basically copy coupon, view price history or create e-mail price alert. Let’s see what best price is ATM.
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
| Image | Product (link) | Price | Coupons |
|---|---|---|---|
 |
Yieryi 5 in 1 Digital Water Quality Meter TDS PH EC Salinity Temperature Tester for Spa Pools Aquariums Salt Freshwater Food | $20.19 | – |
Click here to search by yourself. Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China. You can get coupon down below.
Link: Banggood product page
1. ($46.76): BGGines
you should apply the coupon in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BGBG77169, BG8ca8b3, BGherra
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – EZ-9909A 5 in 1 TDS/EC/PH/Salinity/Temperature Meter [EU] ($-3)
Price history and price alert
Do you need price history chart (for all/most countries) for EZ-9909A 5 in 1 TDS/EC/PH/Salinity/Temperature Meter? There we go. The lowest price was: $27.99.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).
. I’m afraid that there’s no working coupon in Banggood. I don’t know if this is a good price – number of records in my database is too low!