truecal batch specific calibration hach tnt 821 reagent

{"cid":"91225496","title":"HACH Total Phosphorus TNT 821 Reagent with Pre-dosed Vials, Barcode Technology, and Truecal Batch-Specific Calibration for Water Quality Analysis","imgUrl":"https:\/\/img.chinax.com\/nimg\/8a\/bf\/941b12041afafa16136a0c0ad47e-200x200-1.jpg","attrs":{"Price":"49.9 SUD","Brand Name":"HACH","Model Number":"TNT821","Minimum Order Quantity":"1","Delivery Time":"6-8WEEK","Payment Terms":"T\/T","Supply Ability":"1PC 6-8WEEK","Datastorage":"Internal memory with capacity for thousands of readings","Dimensions":"Varies, e.g., 200mm x 80mm x 40mm for handheld","Productname":"Water Quality Analyzers","Waterproofrating":"IP67 or higher for handheld devices","Responsetime":"Typically less than 30 seconds","Weight":"Typically 300g to 1.5kg depending on model","Displaytype":"Digital LCD or LED screen","Measurementrange":"Varies by parameter, e.g., pH 0-14, DO 0-20 mg\/L","Measurementparameters":"pH, Dissolved Oxygen, Turbidity, Conductivity, Total Dissolved Solids (TDS), Salinity, Temperature, Ammonia, Nitrate, Phosphate","Operatingtemperature":"0\u00b0C to 50\u00b0C (varies by model)","Powersupply":"Battery-powered or AC adapter","Calibration":"Manual or automatic calibration with standard solutions","Dataoutput":"USB, Bluetooth, RS232, or SD card","Accuracy":"Typically \u00b10.01 pH, \u00b10.1 mg\/L DO","Portability":"Handheld or benchtop models available"}}