Color: As shown in the First image. Quantity and size : As shown in the title or description. Digital Ph Ec Tds Meter-tester Temperature Pen Water Purity Ppm Filter Features: Easy to Use: Simply Immerse the PH Meter Electrode in the Solution to Be Tested, Readings Are Quickly Displayed on a Large LCD Display Wide Application: Ideal Instrument For Any Aquarium, the Fishing Industry, Swimming Pools, Spa, School Laboratories, Food & Beverage, Drinking Water Etc Auto Calibrated: Features In-built Calibration with 2 Buffer Powders(included) Just Press a Button to Finish the Calibration This PH Meter is Factory Calibrated Users Can Use It Directly Fast and Accurate Results: No Need to Work with Those Annoying Color Charts and Test Strips Resolution: 0.01 PH, Accuracy: ±0.01 PH Compact Portable Design: Pocket Fitting PH Meter That's Also Lightweight and Compact Total Concealed Fit in Your Bag or Pocket For Easy, Casual Carrying Features: Display: LCD Digital Accuracy: 0.01 Resolution: 0.01 Operating Temperature: 0~60°C Measuring Range: 0.00~14.00 Probe Type: Precision Glass Bulb Electrode Power Supply:2*1.5V LR44 Batteries(Not Included ) Operation 1.Remove Protective Cap 2.First Rinse the Electrode with Distilled Water and Suck It with Filter Paper 3.Turn the Meter on by Pressing the €œON/OFF€� Key 4.Immerse the PH Meter Electrode in the Solution to Be Tested (should Not Be over the Immersion Line) 5.Stir Gently and Wait Around 30 Seconds Till the Reading Stabilizes 6.After Finishing, Clear the Electrode with Pure Water, Turn the Meter off by Pressing €œON/OFF€� Key 7.Always Replace the Protective Cap After Use Calibration 1.Turn on PH Meter 2.Disolve Each Buffer Solution in 250ML of Distilled Water 3.Immerse the Electrode into the PH 6.86 Solution,(under the Temperature of 25) 4.Press the €œCAL€�(calibration)button For 5 Seconds and Release -Display Will Start Flashing 6.86 -Wait Until the Display Stops Flashing Rinse the Electrode with Distilled Water and Dry It with Filter Paper 1 Immerse the Electrode in PH 4.00 Solution, -Press the €œCAL€� Button For 5 Seconds, then Press and Release Immediately the Second Time -Reading Will Start Flashing at 4.00 -Wait Until the Display Stops Flashing Rinse and Dry the Electrode with Distilled Water As Be For e 6.Place the Meter Back to the Buffer Solution to Test Calibration If Incorrect, Please Repeat the Calibration 7.If the Approximate PH of Your Test Solution is Known to Be Above 7.0, Calibrate the Meter Using 6.86 and 9.18 Solution To Do This, Please Follow the Calibration Chart, The Third Step is the Calibration Method For 9.18 Point Package Includes: 1)One PH Meter 2)2 Bags Buffer Powder 3)Instruction Manual