Meters, Cannabis
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Manual vacuum regulation can also be a very cost-effective solution. Air is drawn in through a fine regulation valve and the resulting vacuum is set. A manometer displays the pressure. The recommended Woulff bottle acts as a buffer vessel and condensate trap.
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Upgrades to design and function won't break the bank Expanded 4-digit dual-line display shows pH and temperature readings simultaneously Additional key provides an easier, more intuitive interface Improved cap functions as a sample cup and as a stabilizing base to stand the meter…
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