Precision pH Indicator Paper

Precision pH test strips are made by impregnating special indicators, which undergo a color change reaction upon contact with a solution. The pH value is determined by comparing the color with a standard color chart. They are used for rapid detection of liquid acidity and alkalinity, suitable for on-site preliminary testing in scenarios such as laboratories, water treatment, and food processing.
Selection
When selecting, consider the measurement range and accuracy. Narrow-range test strips are suitable for specific pH environments, while wide-range strips are ideal for unknown samples. Pay attention to the clarity and stability of color development to ensure distinct color differences on the color chart. Choose the packaging form based on the usage scenario: sealed individual packaging prevents contamination, while roll-style packaging is suitable for continuous testing. Note that the test strip material must be resistant to solution corrosion.
test range
precision

Terms

Standards

Instruments

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

Glass electRode design, rugged, in line with IP67 waterproof standards; Measurement range - 2.00~ 16.00pH, accuracy +/- 0.02pH; built-in automatic temperature compensation and Sensor Check ™ function, convenient real-time monitoring of ElectRode status.

$ 1027.00

With pH, ORP, dissolved oxygen three measurement functions, support automatic temperature compensation and salinity compensation, built-in 500 data storage, equipped with USB Communication interface, Measurement accuracy of +/- 0.002pH.

$ 630.00

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

Measurement accuracy of +/- 0.05pH, resolution of 0.01pH, pH and mV can be detected at the same time, built-in battery supports 10-15 hours of battery life, easy to operate, stable and reliable.

$ 127.00

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

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

Irreversible discoloration design to ensure permanent preservation of temperature records, 85 ° C accurate temperature measurement point with 2x2cm circular patch, Pressure sensitive adhesive layer to achieve firm paste and its own protective film to enhance durability

$ 89.00

Glass bulb sensitive film, Measurement range 0-14pH, suitable for low Conductivity Detector sample measurement under closed static conditions, Dimension Φ 12 × 120mm.

$ 89.00

Calibrated at 1.68pH with a capacity of 500mL, with high Precision, for calibrating pH measuring instruments, ensuring reliable results, stored in a drying cool environment to maintain Stability.

$ 125.00

With 0.002pH Measurement accuracy and 5 point Adjustment, support automatic temperature compensation and ElectRode diagnosis, built-in 500 data storage and GLP compliance.

$ 472.00

Measurement accuracy up to 0.01 pH with 3 point button calibrating and automatic end point locking, support automatic temperature compensation and a variety of pH ElectRode selection to ensure full scale accurate measurement.

$ 333.00

Microprocessor controlled, with 0.1-14 pH Measurement range and +/- 0.1 pH accuracy, support for three-point calibrate and temperature compensation, portable design weighing only 88g, suitable for on-site rapid detection.

$ 102.00

Articles

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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.
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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.
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The softness tester can show a data difference of up to 30% when measuring paper hand-feel samples taken from different directions.
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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.