pH 4.01 Calibration Solution 20ml Sachet

Unlock Your Pot-tential with pH 4.01 Calibration Solution 20ml Sachet

Low pH calibration is critical for South African hydroponic, coco and soil growers — hard water, acidic amendments or drift in recirculating systems can push readings below 5.5, locking out iron, manganese and other micros before you see yellowing or stunted growth. The pH 4.01 Calibration Solution 20ml Sachet provides a single-use, NIST-traceable buffer (exactly 4.01 at 25 °C) to anchor the acidic end of your meter’s range for trustworthy two-point calibration. Pre-portioned 20 ml sachets eliminate cross-contamination from multi-use bottles, making the process fast, clean and reliable — tear open, dip the probe and calibrate in seconds. Temperature-compensated values from 0–60 °C allow precise adjustments for your grow-room conditions (e.g., 4.00 at 20 °C, 4.03 at 40 °C). Perfect for daily/weekly checks on pens, handheld meters or controllers like the P50 Pro2, P110 Pro2 or P160 Pro2. Store between 15–25 °C away from sunlight — no waste, no errors, and full confidence that your pH stays in the optimal 5.8–6.2 zone for maximum nutrient availability and explosive yields.

Key Features

• NIST-traceable pH 4.01 buffer – lab-grade accuracy for low-range calibration
• Single-use 20 ml sachets – prevents contamination & guarantees fresh solution every time
• Temperature compensation table – precise values from 0–60 °C for real grow-room conditions
• Quick & hygienic calibration – tear open, dip probe & calibrate in seconds
• Box of 25 – flexible for hobbyists & commercial growers
• Store 15–25 °C – stable & reliable when kept away from heat & direct light