Is Smart Device : NODisplay Type : DIGITALWith Backlight Or Not : NOModel Number : PH007BX010Certification : CEis_customized : YesDIY Supplies : Plumbingoperating : Manual calibration10pc PH007BX010 : 10pc 4.00/4.01butter power, 10pc 6.86 butter powercolor : yellowweight : 10pc,1080grange : 0.1-14.00With Backlight Or Not : Noinstrument : phaccurancy : +/- 0.1phbattery : LR44 button cellwarehouse : china.Brazil.Ukraine.RussiaSupport : dropshippingpakage : 10pcsProduct Descriptions:100% BRAND NEW Weight: 51gExcellent meter, very accurate and durableMeasuring pH Range: 0.0 - 14.0 pHResolution: 0.1 pHAccuracy: 0.1 pH (20C), 0.2 pHTemperature Compensation: 0 - 50C (32-122F).Calibration: manual,1 pointBattery:AG 13 button cell batteries (not included)This digital pen style pH meter is an ideal instrument for aquarium, fishing industry, swimming pool, school laboratory, food & beverage etc.Please calibrate with the buffer solution before use.Easy to CalibrateYou can simply follow the instruction on the provided packet of solution 4.00or 6.86 , immerse the PH tester in the solution and adjust with the provided screwdriver to dial it in.Easy to Operation1. Remove the protective cap.2. First clean the electrode with distilled water, and suck it with filter-paper.3. Turn on PH by "ON-OFF"switch located on the top of battery case.4. Immerse the PH meter electrode in solution up to be the immersion level.Under no circumstances immerse above display level.5. Stir gently and wait for the reading to stabilize.6. After use, Switch off PH, Use the distilled water clean the electrode and replace the protective cap.Package Content1)1 x pH meter2)1 x screw driver3)2 pouches of calibration buffer solution (4.0 & 6.86)4)1 x instruction manual ( English)5)retail boxKindly ReminderBe careful with the glass probe since it may be a little fragile when you use.Remember to gently wipe it with a clean, soft cloth when you're done before capping it again.