VTSYIQI Laboratory Pb Ion Meter Lead Ion Concentration Meter with Backlit LCD Display USB Communication Interface Calibration Fluid Range 0.2 to 20800 ppm Accuracy±1% F.S. 2 to 5 Point Calibration Automatic Electrode Diagnosis

VTSYIQI Laboratory Polarimeters Manual Polarimeter Instrument with Sodium Lamp -180° to +180° Accuracy 0.05° Research Industry Type Disk Polarimeter 100mm and 200mm Polarimeter Tube

VTSYIQI Laboratory Roller Mixer Test Tube Rotator Mixer with 8 Rollers Brushless Motor Rotating Shaking Speed Range of 20-80rpm Specs φ6 to 34mm LCD Display Screen Speed and Time Control Roller Length 28cm Non-slip for Preventing Blood Clotting

VTSYIQI Laboratory Spectrophotometer Digital Colorimeter Multi Angle Spectrophotometer with 5 Kinds Measuring Calibers Φ11mm Φ10mm Φ6mm Φ5mm Φ3mm Accuracy 0.01 for Oil Painting Color Matching

VTSYIQI Laboratory Turbidimeter Kit Digital Nephelometer Turbidity Meters with TSS Measurement Mode Range 0~2000 NTU/FNU 0~500 EBC 0~9999 ASBC 7 Point Calibration 4 PCS Liquid Solutions Suspended Particle Test

VTSYIQI Laboratory Turbidity Meter Kit Benchtop Nephelometer Turbidimeter with 7 Point Calibration Range 0 to 2000 NTU/FNU 0 to 500 EBC 0 to 9999 ASBC Accuracy ±2% 4 PCS Liquid Calibration Solutions Suspended Particle Test

VTSYIQI Laboratory Turbidity Meter Multiparameter Turbidimeter with 7 Point Calibration Range 0 to 2000 NTU/FNU 0 to 500 EBC 0 to 9999 ASBC Accuracy ±2% Suspended Particle Analysis 4 PCS Calibration Solution

VTSYIQI Laboratory Turbidity Meter Turbidity Analyzer Water Quality Meter with Range 0~1100 NTU/FNU 0~275 EBC 0~9999 ASBC for Light Tap Water Turbidity Meter Tester 4 PCS Calibration Solution

VTSYIQI Laboratory Water Hardness Meter Digital Water Hardness Meter with Standard Calibration Solutions Accuracy ±1% F.S. Setup Menu Allows Setting the Number of Calibration Points for Measuring Calcium and Magnesium Ion Concentration in Water Samples

VTSYIQI Laboratory Water Hardness Tester Benchtop Water Hardness Analyzer with with Calibration Liquids Boiler Range 0 to 400 mmol/L Ca²⁺ Range 0 to 8020 mg/L 2 to 5 points Calibration Setup Menu Allows Setting the Number of Calibration Points

VTSYIQI Labrorary pH Meter Digital Benchtop pH Analyzer with ORP Range -1999.9 to 1999.9 mV Accuracy ±0.2 mV Auto-read Function Expanded Memory Stores USB Communication Interface

VTSYIQI Large Caliber Spectrophotometer Color Meter d/8 Colorimeter Color Matching 16mm Precise Reflectance Tester for Flat Powder Liquid Measurement Test