Cartridge Tester for hp 301, for hp 122, for hp 802       Specifications   Empty Ink Cartridges Tester
1. for HP301XL, for hp61XL, for hp122XL, for hp802, for hp704XL, for hp46XL,for hp678
2. detect the Resistance value 3. Seperate cartridge version    Advantage:   1. it can check printing quality instead of the slow printers. Save time and money.
2. it's very small, you can take it into any place easily & do testing, save space and convenient 3. Check empty ink cartridge quality at 100% rate. Save money from the better empty cartridge quality control. 4. Testing is fast. in 2 seconds you can check 1pcs. Save much time and labor cost. 5. Seperate Cartridge version: old or V1 version.