High-Precision pH Test Paper

pH precision test strips are made by impregnating cellulose paper with a mixture of acid-base indicators. When in contact with a solution, a color change reaction occurs, and the pH value is determined by comparing the color with a reference chart. They are used for rapid detection of liquid acidity or alkalinity in laboratories and are suitable for on-site testing in applications such as water quality analysis and chemical production.
Selection
Select the test strip range based on the nature of the solution to be tested: use wide-range test strips for strong acids and bases, and narrow-range for biological samples. Consider the precision requirements: use test strips with 0.5 graduations for routine testing, and 0.2 graduations for special needs. Pay attention to the corrosion resistance of the test strip material, and use specially coated test strips for organic solvent environments.
test range
precision

Terms

Standards

Instruments

It can automatically measure the dynamic and static COF at the same time, with a force measurement range of 0~ 5N, using high-precision ball screw drive, and equipped with a micro-printer to print multiple sets of results and averages.

$ 2007.00

Using high-precision ball screw drive, the total error of the force measurement system is less than +/- 2%, and the dynamic and static COF can be automatically measured at the same time. The micro-printer can print multiple sets of results and the average value.

$ 2007.00

High-precision Sensor is used to ensure accurate and stable weighing, Response Time ≤ 3 seconds to quickly display results, with practical functions such as peeling, counting, unit conversion, etc., and the front horizontal bubble is easy to adjust.

$ 162.00

High-precision Sensor is used to ensure accurate and stable weighing, battery is equipped to achieve AC and DC dual-use, Response Time ≤ 3 seconds, LCD with backlight display operation is simple and intuitive.

$ 170.00

The use of servo motors ensures stable operation and high precision in coating, featuring heating and vacuum adsorption functions, supporting free adjustment of coating length and speed, and a newly designed wire rod installation method for easy cleaning.

$ 4914.00

It can automatically measure the dynamic and static Coefficient of Friction at the same time, using high-precision ball screw drive, the total error of the force measurement system is less than +/- 2%, and the micro printer can print multiple sets of results and the average value.

$ 2007.00

High-precision Sensor for 0.01g Readability and 0.001g/cm ³ density accuracy, built-in multiple density references and rigorous calculation programs, supports solid liquid sample testing and directly displays density results.

$ 332.00

High-precision Sensor is used to ensure accurate and stable weighing, and the battery is configured to achieve AC and DC dual-use. LCD backlight liquid crystal display is intuitive, with various functions such as weighing, peeling, counting, and unit conversion. Response Time ≤ 3 seconds, readability 0.01g.

$ 131.00

With pH and mV dual measurement function, Measurement accuracy of +/- 0.02pH, Support 0-60 ℃ Temperature Measurement range, Standard Composite ElectRode and optional diamond bracket, easy to operate.

$ 130.00

With 0.01pH high resolution and 1mV mV value resolution, support manual temperature compensation and intelligent determination of endpoints, provide automatic shutdown and IP54 Protection Ratings, Data storage 50 sets.

$ 403.00

It can automatically measure the dynamic and Static COF at the same time, and the total error of the force measurement system is less than +/- 2%. It adopts high-precision ball screw drive, stable performance, accurate test and convenient operation.

$ 2007.00

With 0.01 pH high resolution and automatic temperature compensation function, support intelligent end point determination and 1-3 point ElectRode calibration, equipped with IP54 Protection Rating, can store 50 sets of data and automatically identify the standard buffer solution.

$ 477.00

Suitable for 0~ 80 ℃ high temperature environment, Measurement accuracy of 0.01pH, Sensitivity high, more than 60 ℃ can still work stably, with Calomel electRode through potential changes reflect the pH value of the solution.

$ 94.00

Measurement accuracy up to 0.002pH with 5 point button calibrate and automatic identification buffer function, 500 data storage and automatic temperature compensation are supported to ensure full scale accurate measurement.

$ 425.00

Measurement accuracy of +/- 0.01pH, resolution of 0.01pH/1mV, support 0-60 ℃ Temperature Measurement range, equipped with positioning, slope, temperature adjustment knob for calibrating operation.

$ 133.00

Articles

Extended Application of Paper Water Absorption Tester in the Dispersibility Evaluation of Tissue Paper
This article explores how to extend the application of an instrument originally used for testing the water absorption capacity of paper to evaluate the dispersibility of tissue paper.
Short Span Compression Strength (SCT) Tester for Analyzing Paper Compression Resistance
The short-span compressive strength (SCT) tester is used to measure the resistance of materials such as paper and cardboard to compression over a short distance, primarily following international standards such as ISO 9895.
The Working Principle and Calibration Method of Electronic Paper Tensile Strength Tester
The electronic paper tensile strength tester is used to measure the mechanical properties of materials such as paper under tension. It is recommended to calibrate the instrument annually and maintain a stable environment along with clean fixtures during daily use.
Key points for measuring the pH of water-based ink with a pH meter
This article introduces the key steps for measuring the acidity or alkalinity of water-based inks using a pH meter.
Correlation Analysis between Puncture Strength and Bursting Strength of Paperboard
This article analyzes the correlation between the puncture strength and burst strength of cardboard. The two properties respectively measure the ability of cardboard to resist dynamic impact and static pressure. Although their testing principles differ, both are closely related to factors such as the fiber structure and lamination process of the cardboard.
When to use three-point calibration versus two-point calibration for pH meters?
The calibration of a pH meter is performed to determine the actual zero potential and slope of the electrode, enabling accurate measurement of the acidity or alkalinity of a solution. Two-point calibration is commonly used for daily measurements within a narrow range, while three-point calibration is employed for higher accuracy requirements.
Friction Coefficient Tester in the Testing of Paper Slip and Stacking Performance
This article introduces how a friction coefficient tester measures the slipperiness and stacking performance of paper. By measuring the friction on the paper surface, it calculates the static friction coefficient and dynamic friction coefficient, which correspond to stacking stability and slipperiness, respectively.
The role of black-and-white test paper in contrast ratio measurement
Black-and-white test paper plays a key role in determining the contrast ratio of coating materials. The contrast ratio is an important indicator of hiding power, calculated by comparing the reflectance of the coating on black and white substrates.
The softness tester can show a data difference of up to 30% when measuring paper hand-feel samples taken from different directions.
This article mainly discusses that when testing the softness of paper, if samples are taken along different directions, such as the machine direction (longitudinal) and the cross direction (transverse), the measured data can vary significantly, sometimes by as much as 30%.
How much does the sampling direction affect the accuracy of the short-span compression tester for measuring cardboard compressive strength?
The short-span compression tester is used to measure the edge crush resistance of cardboard, but the sampling direction significantly affects the results. The compressive performance of cardboard differs in the machine direction and the cross direction, with experimental data showing a strength difference of 20% to over 50% between the two.