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Maintaining stable pH levels is critical across numerous scientific and industrial applications, from chemical synthesis to biological research. The right chemical buffer can prevent costly errors and ensure reproducible results. This guide will help you navigate the options to select the most suitable buffer for your needs.
Reported values are accurate to +/- 0.01 pH at 25 °C and are traceable to NIST Standard Reference Materials (SRMs).
Produced in an ISO 9001:2015 certified facility using high-purity reagents, deionized water and certified analytical balances in a temperature controlled environment.
color-coded for quick identification.
Double-sealed. 2-year expiration from manufacture for an unopened bottle.
High Accuracy: These high-purity buffer powders ensure precise pH calibration with ±0.01 pH accuracy at 25°C/77°F; They keep your pH testers sharp and reliable for consistent results
High Stability: These premium buffer powders maintain accurate pH values of 6.86, 4.00, and 9.18, even after long-term storage, saving you from repeated purchases for pH calibration
Individual Packets: Includes 6 packets of pH 4.00 solution powder, 6 packets of pH 6.86 solution powder, and 6 packets of pH 9.18 solution powder; Each packet is individually sealed to ensure freshness and accuracy, making them easy to carry and store
Quick Dissolution: These pre-measured pH buffer solution powders dissolve quickly, streamlining the calibration process; They contain no harmful substances, ensuring safe handling
Simple to Use: Compatible with any pH tester and probe; Just empty a packet into a clean glass beaker, add 250ml deionized or distilled water, stir gently until dissolved, and you're ready for calibration
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Easy to use: Mix the pH Meter Buffer Solution Powder with 250ML distilled water or Ultra pure water/ pure water,put the pH meter into the solution, stir gently, and wait for a few seconds to get the result
Accurate:at 25°C ,pH buffer calibration solution powder accuracy is ±0.01pH,precise
5 packets of pH 4.01 Solution powder, 5 packets of pH 7.00 Solution powder,5 packets of pH 10.01 Solution powder , cost-effective and flexible for using
Save Money:One packet of ph buffer powder yields 250ml of calibration solution.The remaining unused pH calibration solution can be sealed storage for 20 days for future use
Wide range of applications: testing the pH balance of drinking water, aquariums, swimming pools, spas or hydroponics
High Accuracy: pH tester calibration powder solution accuracy is plus or minus 0.01pH
Compatibility: Suitable with most of pH meters, Ideal for Calibrating
Individually wrapped to maintain freshness until use. Made with qualify materia
Easy to use: Mix the buffer powder with 250ML distilled water, put the pH meter in the solution and gently stir and wait a few seconds for the result
12 pack: 4 packets of pH 6.86 Solution powder, 4 packets of pH 4.01 Solution powder, 4 packets of pH 9.18 Solution powder, cost-effective and flexible for using
Last update on 2026-07-17 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Chemical Buffers
Types of Buffers
Common buffer systems include phosphate buffers (useful in physiological pH ranges), TRIS buffers (effective at slightly alkaline pH), and acetate buffers (suitable for acidic conditions). For biological applications, HEPES and MOPS are often used due to their stability and low UV absorbance. Inorganic buffers like borate are also available for specific industrial uses. The choice often depends on the target pH, experimental conditions, and potential chemical interactions.
Frequently Asked Questions
What is buffer capacity?
Buffer capacity refers to the measure of a buffer solution's resistance to pH change. It indicates how much acid or base can be added to the buffer before a significant change in pH occurs. A higher buffer capacity means the solution can withstand greater additions of acid or base without a substantial pH shift.
How do I choose the right pH for my buffer?
The ideal pH for a buffer is typically within one pH unit of the pKa of the weak acid or base it contains. You should select a buffer system whose pKa is closest to your target pH to ensure maximum buffering effectiveness.
Can buffers be reused?
The reusability of a buffer depends on the application and the buffer's stability. For some industrial processes, buffers might be regenerated and reused. However, in many sensitive scientific experiments, especially those involving biological samples, using fresh buffers is crucial to prevent contamination and ensure accuracy.
What is the difference between a buffer and a pH indicator?
A buffer solution is designed to maintain a stable pH, resisting changes. A pH indicator, on the other hand, is a substance that changes color at a specific pH range, helping to measure or indicate the pH of a solution. They serve different, though often complementary, purposes.
Are there any safety precautions when handling buffers?
Yes, always consult the Safety Data Sheet (SDS) for the specific buffer components. Wear appropriate personal protective equipment (PPE) such as gloves, eye protection, and lab coats. Handle chemicals in a well-ventilated area, especially if working with volatile components or concentrated solutions.
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