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How can I activate NumLock on my Bakker Elkhuizen S-board 840 Compact Keyboard?

1Answers
DelMariana
12/17/2025, 12:38:30 PM

To enable NumLock on the Bakker Elkhuizen S-board 840 Compact Keyboard, press and hold the Fn key, then press the F11 key (which also functions as NumLock). This key combination, Fn + F11, toggles the NumLock function on or off. Once activated, you can use the numeric keypad to input numbers. After pressing the key combination, release both keys to ensure NumLock is correctly enabled, as detailed in the S-board 840 Compact Keyboard's user manual.

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Maintaining the cleanliness of your seripettor pro Bottletop Dispenser is essential for accurate performance and to prevent contamination. Here’s a detailed guide to cleaning your dispenser: Basic Cleaning: Start by emptying the dispenser completely into an appropriate container. Rinse the instrument thoroughly. Fill and empty it several times with a suitable cleaning agent, such as deionized water. Cleaning and Replacing Valves: Filling Valve: Remove the filling tube and unscrew the filling valve. Clean any contaminated parts and consider replacing the sealing ring if necessary. Discharge Valve: Detach the dispensing tube cap and remove the discharge valve. Clean all contaminated components and reinstall the cleaned or new discharge valve. Addressing a Stuck Valve Ball: If the valve ball gets stuck, use a 200 µl plastic tip to gently dislodge it. Replacing the Dispensing Cartridge: If you notice sluggishness or leaks, the dispensing cartridge may need replacing. Ensure you clean the dispenser before inserting a new cartridge. Autoclaving: Certain parts of the seripettor pro are autoclavable. Always follow the manufacturer’s specific instructions for sterilization. Preparing for Sterile Work: After autoclaving, seal the dispensing tube and tighten all screws before utilizing the dispenser in a sterile environment. Troubleshooting: If you encounter issues like slow piston movement or dispensing problems, consult the troubleshooting section of your user manual for potential causes and solutions. By adhering to these cleaning procedures, you can keep your seripettor pro Bottletop Dispenser functioning optimally, ensuring precise and contamination-free dispensing.
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To maintain optimal accuracy with your E+E Elektronik HTP501 Digital Humidity and Temperature Probe, calibration is recommended. While the probe requires no special maintenance, for the best results, especially when measuring across broad humidity and temperature spans, calibrate the probe every 12 months. You have options for calibration, including using a humidity calibrator, a handheld device, or humidity standards. Alternatively, you can send your probe to the E+E Elektronik calibration laboratory for professional calibration and adjustment. For detailed guidance on calibration and adjustment procedures, please consult the E+E Elektronik website or contact their customer support team.
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