$12.34 – Ethylene Glycol: -50°C-0°C (0–70%), Propylene Glycol: -50°C-0°C(0–70%), Resolution Factor: 5°C / 5% /, (ATC) Temperature Compensation Range: 10°C-30°C.
When I was updating this page, then coupon price was $12.34 for Car Automotive Refractometer (in Banggood). Go down and check coupons out. Remember to check price history if it is available. Do you want to know what the best price is?
Latest price update (UTC time):
Banggood ($12.34)
Banggood warehouse is located in China. But wait a sec… Is it a good price? Maybe there’re no more promotions for this item, because current price is higher than average (which is equal $12.02) Well, there is one coupon available right now.
Link: Banggood product page
Price without coupon: $12.99
1. ($12.34): BGMAI666
coupon code has to be applied in shop’s 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): BG20236Tool, BGTOOS729
(you can check these old coupons out, but these probably won’t work)
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
Click here to search by yourself. Here are coupons that you can use.
Price history and price alert
Do you need price history chart (for all/most countries) for Car Automotive Refractometer? There we go. The lowest price was: $11.04.
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)).