Laboratory Consumables Product Overview

Frequently Asked Questions

Quick answers to common questions about our services and processes.

Which pipettes are compatible with our tips?
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Our tips can be compatible with many brands of pipettes, including but not limited to Eppendorf, Thermo, GILSON, Biohit, IKA, etc. Through experiments, we have verified that the use of different pipettes will not leak air or liquid, and can ensure the accuracy of pipetting.
How to sterilize the non-sterilized tips and centrifuge tubes at high temperature and pressure?
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Autoclaving is a very routine procedure. Sterilization at 121 ° C and 15 PSI for 20minutesisrecommended. For safety, it is recommended to wait until the natural end of thesterilizationprocedure.
How does the tip of the filter element prevent pollution?
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Filter tip to prevent pollution mainly by two ways: one is through the aperture, thesmallertheaperture is, the more effectively the aerosol can be blocked through; The secondisthroughmicro-channel interception, filter fibers interweave into disordered channels, greatlyincreasing the ability of the filter element to capture aerosols.
Customers are worried that the tip of the preinstalled plate of the filter element cannot be kept sterile?
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We have verified through experiments that the preloaded plate tip of the filter element canbesterilized at 121℃ for 20 minutes. During sterilization, the plastic packaging is removed, and the packaging is sterilized by newspaper, kraft paper or special sterilizationbag.
What is the grade of sterile SAL?
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Our sterility grade is SAL 10 -6 .
Polypropylene tip to organic and inorganic solution tolerance?
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A wide variety of reagents are available in the laboratory, and in general, the PP material is well tolerated by all kinds of reagents. Therefore, there is usually no significant change even if the tip is exposed to the solvent for 30 days. Experimental verification, in the test reagents, propylene glycol (alcohol), petroleum ether (ether), ethyl acetate (ester), acetic acid (acid), sodium hydroxide (base), dichloromethane, tetrahydrofuran (alkane), DMSO, and other commonly used types of reagents immersed for 30 days, no deformation and no corrosion, using a 1/10,000 balance weighing, no significant change.
Is the release agent used in the production process?
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Not used.
Why some tip with scale?
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The tip containing the scale allows the user to observe whether the suction volume of the pipettor is accurate.
How many times can the tip rack be sterilized by high temperature and high pressure?
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We recommend that customers use our tip rack for autoclaving no more than 3times. Conditions: 15 PSI at 121 ° C for 20min.
Have our tips been treated with DEPC?
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DEPC treatment is designed to make the consumables free of nuclease, whereasLedger'sconsumables are all Dnase and Rnase-free. This is based on the result that wecontrol theproduction process from the raw material. Final product We performed quality checksonthenuclease without additional DEPC processing steps. Its product application is consistent with DEPC-treated consumables, and Ledger products can be used in molecular biologyexperiments instead of DEPC-treated consumables.