Specification BatteriesIncluded : 1 BatteriesRequired : 1 Brand : WLR Industries BulletPoint1 : Auto Sensor : Built in temperature sensor for Automatic Temperature Compensated measurements. BulletPoint10 : Temperature unit ℃/℉ is switchable; 1 hour auto power off; Excellent to use in fresh or sea water aqua farm BulletPoint2 : Compact Design: With its compact and portable design, this meter is perfect for on-the-go testing in various applications. BulletPoint3 : Automatic Tester : Selectable Auto shut off to extend battery life BulletPoint4 : Battery Display : Battery % level remaining displayed at start up. BulletPoint5 : Low battery indicator : Displayed when less than 10% battery life is remaining. BulletPoint6 : Cloth Junction : Provides a larger surface area than a standard ceramic junction. BulletPoint7 : Quick : Uses Hanna's Quick Cal pH/EC standard with a pH value of 6.86. The standard can also be used to calibrate conductivity meters to 5,000 μS/cm . BulletPoint8 : Multiple points calibration: 3 points for pH, 1 point for D.O., 4 points for conductivity BulletPoint9 : Manually altitude and salinity compensation function for D.O. measurement Color : Green ContainsLiquidContents : 1 ExternallyAssignedProductIdentifier1 : 0850063330190 ExternallyAssignedProductIdentifier2 : 850063330190 FcShelfLife : 781.5 days IncludedComponents : cuvettes, reagent starter kit, battery, instructions and quick start guide. IsExpirationDatedProduct : 1 ItemName : Hanna HI98118 Checker GroLine Waterproof Hydroponic pH Tester - Simple and Easy Handheld Design ItemPackageDimensions_Height : 17.5 centimeters ItemPackageDimensions_Length : 7.7 centimeters ItemPackageDimensions_Width : 7.9 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : science-lab-ph-meters LiquidVolume : 15 milliliters Manufacturer : WLR Industries Material : Paper Material1 : Paper Material2 : Plastic MeasurementAccuracy : calibrate conductivity meters to 5,000 μS/cm MeasurementType : pH ModelNumber : 98118 NumberOfItems : 1 PartNumber : 98118 PhRange : 0-14 PowerSourceType : Battery Powered ProductDescription : The HI98118 GroLine pocket pH Tester is an affordable way to measure the pH of hydroponic nutrient solutions. The maintaining of an optimal pH is essential to maximize optimum growth. The general rule of thumb is that as pH increases the solubility of minerals and nutrients decrease. It is important that nutrients are soluble for plants to uptake and use for growth. The pH of nutrient solution can also affect the bacteria that fix nitrogen for the plant to use. Every plant has optimum pH levels for growth. Below is a table for the ideal pH range for a variety of plants. The HI98118 can be used to measure the pH in soils as well as nutrient solutions. The North Carolina State University has outlined a procedure known as Pour Through Sampling Method. This method is used for container plants in which 50 ml of leachate is collected from a thoroughly watered plant and then tested. To measure the pH of soil as a slurry the USDA recommends a mixture of 1 part soil to 1 part water. The slurry is allowed to rest for 10 minutes so that the solids will settle out and the pH of liquid above can be measured. The HI98118 is an advanced meter while maintaining simplicity. The front of the meter has two buttons. One is for turning the meter on and off while the other is used to enter the calibration mode. There is a third button in the battery compartment that allows the user to customize the meter to their preference. Customization includes temperature readout in oC or oF, automatic shut off selectable from 8 minutes, 60 minutes or disabled, and lastly the choice of using Hanna's Quick Cal pH/EC standard or traditional buffers values of pH 4.01, 7.01 and 10.01. The HI98118 features a cloth junction. The reference junction of a pH electrode, also known as a salt bridge, provides an electrical pathway between the internal reference cell and the sample. A cloth or fiber wick juction provides a larger surface area than a standard ceramic junction. ProductExpirationType : Shelf Life ProductSiteLaunchDate : 2024-05-24T17:22:23.272Z Range : 0 – 14,10°C – 40°C, 85%RH,50°F – 104°F, 85%RH, RecommendedUsesForProduct : For Testing Urine, Saliva, Aquariums, Pools, Drinking Water, Wine, Liquid Food etc. RecommendedUsesForProduct1 : Chemical Testing RecommendedUsesForProduct2 : Quality Control Style : Hydroponic pH Tester SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 TestType : Array UnitCount : 100 UnspscCode : 41113600 UpperTemperatureRating : 50 degrees_celsius