pH 4.01 Calibration Solution 100ml

Unlock Your Pot-tential with pH 4.01 Calibration Solution 100ml

Low-end pH calibration is vital for South African hydroponic, coco and soil growers — acidic nutrients, organic amendments or drift in recirculating systems can push readings below 5.5, locking out iron, manganese and phosphorus before visible deficiencies appear. The pH 4.01 Calibration Solution 100ml bottle provides a multi-use, NIST-traceable buffer (exactly 4.01 at 25 °C) to anchor the acidic side of your meter’s range for reliable two-point calibration. 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). Close tightly after each use to maintain stability, and store between 15–25 °C away from sunlight — no contamination when handled properly. The 100 ml size offers great value for frequent or daily calibrations on pens, handheld meters or controllers like the P50 Pro2, P110 Pro2 or P160 Pro2. Sustainable, high-precision calibration that keeps your pH locked in the optimal 5.8–6.2 zone for maximum nutrient availability, healthier roots and bigger, better-quality harvests.

Key Features

• NIST-traceable pH 4.01 buffer – lab-grade accuracy for low-range calibration
• 100 ml bottle size – economical & practical for frequent use without waste
• Temperature compensation table – precise values from 0–60 °C for real grow-room conditions
• Multi-use format – reseal immediately after use to preserve integrity
  
• Store 15–25 °C – stable & long-lasting when kept away from heat & direct light