Specification Brand : GIDIGI BulletPoint1 : High Accuracy pH Buffer Calibration Solution Kit: Reports values with precision of +/- 0.01 pH at 25°C. You can use GIDIGI pH meter for a longer period of time and obtain accurate ph buffer calibration solution. BulletPoint2 : Specialized pH Electrode Protection Solution: Regularly replacing with new pH electrode protection solution can help the probe maintain optimal condition and extend the lifespan of the tester. BulletPoint3 : Stable Ingredients pH Solution: Does not easily evaporate after opening, ensuring accurate readings.Unopened bottles have a shelf life of 3 years from the date of production. BulletPoint4 : Color-Coded for Easy Identification: pH 4 is pink, pH 7 is green, and pH electrode protection solution is transparent. We recommend that you regularly calibrate your pH meter to ensure that it is more accurate and better, helping you check the quality of hydroponic nutrient solutions, household water, and drinking water. BulletPoint5 : Large Capacity : Each ph solution bottle contains 250ml, suitable for long-term use with all pH meters, and ideal for pharmaceutical, academic, research, and industrial laboratories. ContainsLiquidContents : 1 IncludedComponents : 1*pH 4.00,1*pH 7.00 ,1*pH Electrode Storage Solution ItemName : pH Meter Calibration Solution Kit,Includes pH 4.00, 7.00 and pH Electrode Protection Solution,pH Calibration Buffer Solution 250ml*2,pH Probe Storage Solution 30ml*1, pH Meter Accessories ItemPackageDimensions_Height : 5.9 inches ItemPackageDimensions_Length : 5.9 inches ItemPackageDimensions_Width : 1.96 inches ItemTypeKeyword : lab-chemical-buffers LiquidVolume : 530 milliliters Manufacturer : JiNan Huiquan Electronic Co., Ltd Material : pH4.00+pH7.00+Sorage Solution ModelNumber : GX-pHS NumberOfBoxes : 1 NumberOfItems : 1 PartNumber : GX-pHS ProductDescription : pH 4.00 Buffers Solution,pH 7.00 Buffers Solution,and pH Electrode Storage Solution ProductSiteLaunchDate : 2024-10-10T10:10:46.913Z SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 UnspscCode : 12000000