Gester Instruments | Professional Textile, Footwear and PPE Testing Equipments Manufacturers Since 1997
Standard Operating Procedure for UV-Vis Spectrophotometers
1. Purpose In order to make the instrument work normally and ensure the reliability of the results, this operating procedure is specially formulated. 2. Scope of application Laboratory 3. Responsible The laboratory personnel should strictly follow the operating procedures, and the QC supervisor is responsible for supervising the implementation of the procedures. 4. Definitions None 5. Safety Precautions If an organic solvent is used as a solvent, it should be noted that it is harmful to human health. 6. Procedure 6.1. Preparation 6.1.1 Power on: Turn on Sipper (suction machine), 8453 detector, monitor, computer host and printer power in turn, and allow the instrument to warm up for 30-45 minutes. 6.1.2 Select Windows NT Version 4.00. 6.1.3 Press"Alt + Ctrl + Del" key to log in. 6.1.4 Enter User Name in turn:"Administrator", and PassWord:"3000hanover" Enter the Window-NT main screen. 6.1.5 Press"START" key, use the mouse to click Program, and then click HP-UV-Chemstation to enter the workstation state, select"Instrument on line". 6.2. Test operation process 6.2.1 Tap dialog box"Mode" key to select from its menu"Standard" mode, by"Instrument" Under the item, select lamp to turn on the deuterium lamp or tungsten lamp. 6.2.2 Determination of absorbance at a fixed wavelength·Tap the Task button and select from the menu"Fixed Wavelength".·Tap the Set Up key next to the Fixed WL key to set the following measurement parameters: Enter the set wavelength. Enter the background correction method to select the data mode.·tap"Sampling" dialog, in its menu select"Sipper".·Will "Sipper" Immerse the pipette in the solvent used to prepare the test solution, tap lightly"Blank", to do a blank scan.·Will "Sipper" Dip the pipette into the sample solution and tap"Sample" Scan the test solution and measure the absorbance value of the sample at this wavelength. 6.2.3 Full-wavelength scanning·tap"Task" box, select from the menu"spectrum/peaks".·tap"spectrum/peaks" right side "Set Up" key to set the following parameters: the number of absorption peaks and valleys the wavelength range of the scan to enter the desired data model (Data Mode)·tap"Sampling" dialog, in its menu select"Sipper".·Will"Sipper"Immerse the pipette in the solvent used to prepare the test solution, tap lightly"Blank" Do a blank scan.·Will "Sipper" Dip the pipette into the test solution and tap"Sample" Scan the test solution and determine the absorbance value of the test solution. 6.2.4 Content determination by working curve method·tap"Task" dialog, select"Quantities".·tap next to"Set Up", set the following parameters. Enter the measurement wavelength. Select the calibration curve. Select the Data Mode. Enter the appropriate unit.·tap"Sampling" dialog, in its menu select"Sipper".·Will“Sipper"Immerse the pipette in the solvent used to prepare the test solution, tap lightly"Blank", to do a blank scan.·tap“StandardTable", Under this screen, measure the reference solution of different concentrations, and obtain the corresponding standard curve, enter the name of the reference solution and its corresponding concentration in the reference product column.·Will "Sipper" Dip the pipette into the test solution, tap the bottom left"Sample", scan the test solution and measure the absorbance of the test solution at this wavelength.·tap"SampleTable", enter the name of the test solution and the dilution factor in the dialog box it opens, and read the measured content. 6.3. End of work 6.3.1. Cleaning of Sipper pipeline: first clean the pipeline with the solvent used for the sample to be tested, and then clean it with pure water. 6.3.2. Print scan map and test data. 6.3.3. Exit UV-Chemistation, exit Windows-NT. 6.3.4. Shut down in the reverse order of startup and cut off the power. 6.3.5. Fill in the usage record.
To that end, GESTER International Co.,Limited has successfully built a solid foundation and infrastructure for textile testing equipment manufacturing.
To understand how efficiently works, go to GESTER Instruments for more information.
As the full potential of tensile tester manufacturers lies in , the demand for is increasing globally, and is being adopted across the global market.
With this competency, GESTER International Co.,Limited provide high technology and assist customers to create added value and contribute to the development of producing textile testing equipment.
The Heat Contact Machine GT-C101 is a specialized testing instrument designed for evaluating the heat resistance and thermal protective performance of gloves, protective clothing, and other heat-resistant materials used in high-temperature environments. In industries such as smelting, casting, welding, and glass manufacturing, workers are frequently exposed to intense heat, making accurate testing of contact heat resistance essential for ensuring safety and compliance.
GT-C101 simulates real working conditions by measuring heat transfer delay and thermal transmission under instant contact with high-temperature surfaces. Fully compliant with EN 407, EN 702, and ISO 12127-1 standards, this machine provides precise, repeatable data for manufacturers, laboratories, and research institutions. With high-temperature capability up to 500°C, advanced calorimetry, digital monitoring, and adjustable contact speed, the Heat Contact Machine GT-C101 is an indispensable tool for developing and certifying next-generation PPE and heat-insulation materials.
Cut resistance is one of the most critical performance indicators in personal protective equipment (PPE) testing, directly affecting worker safety in high-risk industries such as metal processing, machinery manufacturing, and emergency rescue. The TDM Cut Test Machine GT-KC28 plays a vital role in accurately evaluating the cut resistance of PPE products, including gloves, protective clothing, footwear materials, composite materials, rubber, and industrial textiles.
By adopting high-precision force control systems, intelligent data processing, and stable transmission technology, the GT-KC28 TDM Cut Tester can accurately measure the critical cutting force of materials and ensure excellent repeatability and comparability of test results. Its user-friendly touch-screen operation, comprehensive data storage, USB data export, and built-in thermal printer greatly improve laboratory efficiency and data traceability.
The TDM Cut Test Machine GT-KC28 fully complies with major international and national standards such as ISO 13997, EN 388, ASTM F2992/F2992M, ANSI/ISEA 105, and GB 24541-2022, making it a reliable solution for PPE manufacturers, third-party testing laboratories, and research institutions. Through precise and standardized cut resistance testing, the GT-KC28 helps reduce industrial cutting injuries, supports PPE certification across global markets, and ensures that protective equipment delivers reliable safety performance in real-world applications.
Quick links