MUHWA 1000µL Pipette Tips — Blue, Universal Fit, 500/Bag
The workhorse tip. If you're running a molecular biology bench, you'll go through a bag of these faster than any other consumable. Loading gels, setting up PCR, aliquoting reagents, doing minipreps — the 1000µL tip is in your hand more hours of the day than any other piece of plastic.
Five hundred tips per bag. At a typical usage rate of 50-100 tips per experimental day, one bag covers you for one to two weeks. The blue color isn't decorative — it distinguishes the 1000µL tip at a glance from the 200µL (yellow) and 10µL (white) tips in your tip rack. When a protocol says "add 500µL of buffer," you grab blue without thinking.
Tip geometry
The orifice diameter is approximately 0.8mm at the very tip. This is narrow enough for precise dispensing into 1.5mL tubes and 96-well plates, and wide enough that viscous solutions (glycerol, 50% PEG, concentrated protein) flow through without requiring excessive plunger force. The taper angle is standard — it won't bottom out in 1.5mL tubes before you've dispensed, and it reaches the bottom of 2mL deep-well plates for complete liquid removal during extraction steps.
The universal fit question
These tips seat on most pipettors that use a friction-fit barrel: Eppendorf, Gilson (with slightly more insertion force — Gilson barrels run a bit wider), Thermo Finnpipette, Rainin LTS (via adapter), and generic brands. The fit is snug — the tip won't fall off when you release the ejector over a waste container, but it also ejects cleanly with a firm press of the ejector button. If you're switching tip brands, check the seal by drawing up water and holding the pipette vertically — dripping means the seal is incomplete.
Specifications
| Volume | 100–1000µL (usable range), calibrated for 1000µL max |
| Material | Polypropylene, blue pigment |
| Pack size | 500 tips per bag |
| Sterility | Non-sterile |
| Orifice diameter | ~0.8mm |
| Fit type | Friction-fit, universal barrel |
A note on tip waste
If you're not doing PCR and you're working with the same reagent across multiple tubes, you can reuse a tip — draw up buffer, dispense into ten tubes sequentially, then eject. The cross-contamination risk in this scenario is negligible. Five hundred tips goes further than you'd think. For sterile work or PCR setup, use one tip per sample — but for protein gels and washing steps, don't burn through a tip for every lane.
