NIST Traceable Vacuum Meter Calibration Certificate - High Precision Calibration for New Vacuum Gauges | Ideal for HVAC, Industrial, and Laboratory Applications

Professional Noise Dosimeter with SD Card Data Logger - Accurate Sound Level Measurement for Workplace Safety & Industrial Monitoring

Non-Contact Dual Use Infrared Thermometer for Adults & Kids - Fast & Accurate Forehead/Ear Temperature Reading - FDA & CE Certified - Perfect for Home, Office, Travel & Medical Use

COD/BOD/TOC Water Quality Sensor - Digital Analyzer for Wastewater Treatment, Aquaculture & Environmental Monitoring | Online Water Testing Equipment for Labs, Pools & Industrial Use

Digital Ion Sensor - High Accuracy Water Quality Tester for Pools, Aquariums & Hydroponics | Portable pH Meter for Home & Lab Use

Digital Optical Dissolved Oxygen Meter - Portable Water Quality Tester for Aquariums, Pools & Hydroponics | Accurate DO Measurement for Fish Tanks, Swimming Pools & Laboratory Use

Professional Multi-Parameter Water Quality Tester - Digital pH, ORP, Conductivity, TDS Meter for Aquariums, Pools, Hydroponics & Drinking Water Testing

Professional Optical Dissolved Oxygen Meter - High Accuracy Water Quality Tester for Aquariums, Pools, Labs & Environmental Monitoring

ORP Probe for Water Quality Testing - Digital Oxidation Reduction Potential Meter for Pools, Aquariums & Hydroponics | Accurate pH Monitoring Device for Home, Lab & Industrial Use

ORP Standard 240mV - High Accuracy Oxidation Reduction Potential Meter for Water Quality Testing | Perfect for Aquariums, Pools, and Hydroponics Systems

Ozone Test Strips - 100 Pack Water & Air Quality Testing Kit for Pools, Spas, Drinking Water | EPA Approved | Fast & Accurate Results | Home, Lab & Industrial Use

pH Buffer Solution Kit - pH 4, 7, 10 Calibration Standards for Water Testing | Ideal for Aquariums, Pools, Hydroponics & Laboratory Use

Premium pH Probe for Water Testing - High Accuracy pH Meter Sensor for Aquariums, Pools, and Hydroponics | Ideal for Home, Lab, and Outdoor Use

PS2070 Spectrocolorimeter - High Precision Color Measurement Device for Textiles, Paints & Plastics | Lab & Industrial Use

High Accuracy PT1000 Temperature Sensor Probe - Compatible with 850027 Data Logger | Industrial, HVAC & Laboratory Temperature Monitoring

High Accuracy Pure Water Flow Meter for Home & Industrial Use | Digital Water Consumption Monitor for Drinking, Filtration & Plumbing Systems

Quat Test Kit - Professional Titrator Version for Accurate Disinfectant Testing | Ideal for Hospitals, Labs & Food Industry

10-Pack Total Chlorine Reagent Test Kit for Swimming Pools, Spas & Hot Tubs – Accurate Water Testing Solution

Certified Refurbished Pressure Transducers - High Accuracy Industrial Sensors for Hydraulic Systems & HVAC Monitoring

High-Quality Recertified Optical Refractometers for Precision Measurements | Ideal for Laboratories, Brewing, and Food Processing

Certified Torque Meters - High Precision Digital Torque Wrenches for Automotive, Industrial & DIY Use - Reliable Torque Measurement Tools for Mechanics, Engineers & Home Projects

Rechargeable Dissolved Oxygen Meter Pen with 5m Cable - Portable Water Quality Tester for Aquariums, Pools, and Hydroponics

High Accuracy PT100 RTD Temperature Sensor Probe - Industrial & Laboratory Use for HVAC, Food Processing, and Scientific Applications

71 Inch RS232 Serial Cable - High-Speed Data Transfer for Industrial Automation, POS Systems & Computer Networking

Digital Salinity and Temperature Tester Pen with Large LCD Display - Perfect for Aquariums, Pools, and Marine Water Testing

Salinity Refractometer 0-100 PPT with ATC - Accurate Saltwater Testing for Aquariums, Hydroponics & Marine Applications

Salt Refractometer with ATC (Automatic Temperature Compensation) 0-100 PPT - Professional Salinity Tester for Aquariums, Hydroponics & Marine Water Testing

SAMA RANGE Partial Immersion Thermometer 0 to 230°F (10-Pack) - Perfect for Cooking, Brewing, and Laboratory Use

SAMA RANGE Total Immersion Thermometer -20°C to 150°C (Pack of 10) | Perfect for Labs, Cooking, and Industrial Temperature Measurement

High Precision SD Card Datalogger pH Meter - Water Quality Tester for Aquariums, Pools & Hydroponics | Portable pH Monitoring Device with Data Logging

Smart Wireless Long Range Dual Probe Meat Thermometer - Digital BBQ Grill Cooking Thermometer for Smoker, Oven, Kitchen & Outdoor Grilling - Perfect for Steak, Turkey, Chicken & More

Accurate Soil pH Test Strips 3.5-9.0 Range for Garden, Lawn & Plant Care | Fast Home Soil Testing Kit" （如果原始标题中的"3.5 9.0"是表示范围，优化后改为"3.5-9.0"更清晰；添加了精准、快速等关键词；使用场景包括花园、草坪和植物养护）

Professional Digital Voice Recorder & Data Logger - High-Quality Audio Recording Device for Meetings, Lectures, and Interviews | Portable USB Sound Recorder for Students, Journalists, and Business Professionals

High Accuracy Spear Tip pH Probe for Water Testing - Ideal for Hydroponics, Aquariums, and Pool Maintenance

ST700D Plus Handheld Array Spectrophotometer - Portable Color Measurement Device for Paint, Textile & Printing Industries | Lab & Field Use

Smart WiFi Air Quality Monitor - CO2, PM2.5, PM10, PM1.0, HCHO & TVOC Detector for Home & Office | Indoor Air Pollution Tester with Real-Time Data | Perfect for Baby Rooms, Schools & Workplaces