5-in-1 Digital Water Quality Tester, PH/TDS/EC/Temperature Water Test Pen with Backlight for Aquariums
Quick answer
Is $21.92 a good price for 5-in-1 Digital Water Quality Tester, PH/TDS/EC/Temperature Water…?
It is the usual price, not a deal: $21.92 is in line with the typical price of $21.95 that DipScout measured over the last 9 days. It is the lowest in 9 days, but it has held this price since Nov 5, 2026.
$21.92
Today it costs $21.92 on AliExpress. Since Oct 31, 2026, when we started tracking it, it ranged from $21.92 to $21.95. It's the lowest price in 9 days, but it has been at this value since Nov 5, 2026; by our price history that is already the normal price, not a sale.
No drop compared with what we observed over the last 9 days. The store advertises "was $43.85", but that is the store's own claim; we only state discounts our price history proves.
View on AliExpressThe price above is the last recorded reading, not a live checkout lookup.
Price history
Today$21.92lowest ever seen
Lowest$21.92since Nov 5
Highest$21.95Oct 31 to Nov 5
Tracked since Oct 31 · 1 changeHover over the chart to see each price.Tap the chart to see each price.
See every price change
| When | Price | Change |
|---|---|---|
| Nov 5, 20:07 UTC | $21.92 | −0.1% |
| Oct 31, 08:24 UTC | $21.95 | start |
| Store | Insoma Home Store |
|---|---|
| Positive feedback (AliExpress) | — |
| AliExpress category | Tools › Measurement & Analysis Instruments |
| Recorded readings | 2 |
| First seen | |
| Last reading |