Hanna 4.01, 7.01, and Cleaning Solution
Hanna 4.01, 7.01, and Cleaning Solution at HorticultureSource.com -
Hanna Instruments Cleaning Kits Single-dose sachets are quick and easy to use. Each sealed, light tight sachets holds just the right amount of solution. Every time your instrument is calibrated using these HANNA sachets, it is using a newly-opened bottle of solution. Item #716472: This kit includes: (5) pH 4.01 buffer solution sachets HI70004P (5) pH 7.01 buffer solution sachets HI70007P (5) General cleaning solution sachets HI700661P