GroLine pH 7.01 Calibration Buffer (500 mL) complete-systems You can daisy-chain up to

You can daisy-chain up to 4 of these units to the MTMDU unit to maximize your seed starting area

• Can be used in soil

• Spectrum Combinations for your plants

The name "420" references the area of the light spectrum produced by this lamp

GroLine pH 7.01 Calibration Buffer (500 mL) complete-systems You can daisy-chain up toHI7007 050 is a high quality pH 7. 01 calibration buffer that is NIST traceable and supplied with a Certificate of Analysis. Hanna calibration buffers have the lot number and expiration date clearly marked on the label and are air tight with a tamper proof seal to ensure the quality of the solution. Hanna's line of technical calibration buffers have been specially formulated to have an expiration of 5 years from the date of manufacture for an unopened