"The pHoenix is a convenient hand held syringe style meter for quick accurate measurement of conductivity, temperature and pH. FDA Quality Assurance Guidelines recommend that the conductivity, pH and temperature of the final dialysate is checked with an independent reference meter before every treatment. The compact size is easy to use and stores easily when not in use. The easy to follow calibration guide and one touch calibration buttons give you added assurance that the reading on the pHoenix meter are accurate and reliable. The syringe style design allows for you to gather a sample directly from a sample port on the dialysis machine saving you time. Mesa provides you with high quality workmanship and years of proven reliability with each and every product we manufacture."