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in addition to this
Improved resistance to environmental stress
5 ml per liter of solution
594 cfu/gm Trichoderma harzianum ~ 495
If the probe face is dirty or contaminated
Bluelab pH 7.0 Calibration Solution 500 ml FILTERS in addition to thispH measuring equipment must be cleaned and calibrated regularly to ensure they are giving the user accurate readings. pH instruments are calibrated to pH 7. 0 first (buffer) then to pH 4. 0 (slope). Calibration Solutions should be stored in a cool place out of direct sun and heat. They should be stored with the lids securely tightened.
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