Description
Specifications Table
Product Name – Buffer and checking solution set AVS TITRINORM® buffer
Quantity/Pack Size – 1 set (pH 4.01/7.00/10.01, 20 mL each)
Form – Liquid solution
Grade – Analytical reagent (AR) grade, NIST traceable
Application – pH meter calibration, electrode verification, quality control
Product Overview
The AVS TITRINORM® buffer set is a high-precision calibration solution designed for laboratories requiring exact pH measurements. Each set includes three critical pH reference points (4.01, 7.00, and 10.01) in 20 mL sealed vials, ensuring long-term stability and contamination-free storage. Formulated with analytical reagent (AR) grade chemicals, these buffers are NIST-traceable, guaranteeing compliance with international standards for accuracy and reproducibility. The solutions are color-coded for easy identification and come with batch-specific certification for traceability. Their low ionic strength minimizes electrode junction potential errors, while the tamper-evident packaging preserves integrity during transport and storage. Ideal for routine calibration, electrode performance checks, or GLP/GMP compliance, this set eliminates the need for in-house preparation, saving time while maintaining rigorous quality control. The extended shelf life of 24 months (unopened) reduces replacement frequency, and the dropper-cap design allows precise dispensing without cross-contamination.
FAQs
1. How frequently should I recalibrate my pH meter using this buffer set?
Recalibration frequency depends on usage intensity and electrode condition. For daily lab use, weekly calibration with all three buffers (pH 4.01, 7.00, 10.01) is recommended. Critical applications may require calibration before each use, especially if measuring extreme pH values or viscous samples.
2. Can these buffers be used with combination pH electrodes from other brands?
Yes, the AVS TITRINORM® buffers are universally compatible with all standard pH electrodes, regardless of brand. Their NIST-traceable certification ensures consistency across different electrode types, including glass-body, epoxy-body, and refillable reference systems.
3. What’s the difference between this set and single-point calibration buffers?
This three-point set (pH 4.01/7.00/10.01) provides a broader calibration range, improving accuracy across the entire pH scale. Single-point buffers only verify one reference point, which can lead to linear errors, especially in non-ideal samples. The three-point method accounts for electrode slope and offset deviations.
4. How should I store opened buffer vials to maintain accuracy?
After opening, tightly recap the vials and store them upright at 15–25°C, away from direct sunlight and volatile chemicals. Avoid transferring to other containers, as this risks contamination. Use within 3 months of opening for optimal performance, though unopened vials retain full accuracy for 24 months.
5. Are these buffers suitable for calibration in non-aqueous or high-ionic-strength samples?
While optimized for aqueous solutions, the low-ionic-strength formulation reduces interference in moderately ionic samples. For non-aqueous or high-salt matrices (e.g., organic solvents, brines), specialized buffers or electrode conditioning may be required to prevent junction potential errors.
