Cheap Accurate Digital pH Tester for Cheese and Food Safety Verification. Direct Solid Testing: Spear-tip probe allows direct pH testing of semi-solid and solid foods without sample preparation. IP67 Waterproof: Compact pen-style design with IP67 waterproof construction for durability in kitchens and factories. Easy Calibration: One-button 3-point automatic calibration (pH 4.01/6.86/9.18) ensures consistent measurement accuracy. Clear Backlit Display: Large digital screen with backlight and HOLD function for easy reading in low-light environments. CE Certified: Products hold CE certification, meeting EU safety, health, and environmental standards. 1-Year Warranty: Comprehensive 12-month warranty covering free maintenance and part replacement for manufacturing defects. OEM/ODM Support: Custom logo and packaging printing services available for brand customization at an extra cost.