Essentials LAB Buffer 4 is a precision calibration solution with a fixed pH of 4.0, used to calibrate pH meters and pens for accurate nutrient monitoring. This acidic buffer is essential for calibrating equipment that needs dual-point accuracy (e.g., pH 7.0 and pH 4.0), especially when working in environments where acidic nutrient solutions or runoff are common. Made to laboratory-grade standards, Buffer 4 ensures your pH meter provides accurate, reliable readings, which is crucial for maintaining correct nutrient uptake and preventing pH-related plant issues in hydroponic, coco, or soil systems. Key Features: pH 4.0 solution – for low-range pH calibration Ensures meter accuracy in acidic environments Designed for dual-point calibration with Buffer 7 Suitable for all brands of pH meters and pens Long shelf life and lab-grade consistency Essential for growers using hydroponic, soil, or coco systems Available in various bottle sizes How to Use: Rinse the pH probe with distilled water. Submerge probe in Buffer 4 solution. Adjust meter until it reads 4.0. For highest accuracy, calibrate with Buffer 7 first, then Buffer 4. Clean and recalibrate regularly for consistent readings. Specifications: Type: pH calibration solution pH Value: 4.0 Use: Calibration of pH meters and pens Application: All grow systems – hydro, soil, coco Available Sizes: 250ml, 1L (based on stock) Storage: Cool, dark place; keep sealed when not in use Shelf Life: Long-lasting when stored properly Recommended Use: Perfect for growers seeking accurate pH readings at lower ranges, Essentials LAB Buffer 4 is vital for maintaining pH control and nutrient precision, especially in flowering or acidic conditions.
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