MUHWA 200µL Universal Pipette Tips — Bulk Yellow Micropipette Tips for Routine Liquid Handling
MUHWA 200µL Universal Pipette Tips deliver reliable, consistent liquid handling across a wide range of laboratory applications. Molded from virgin polypropylene (PP), these yellow micropipette tips feature a universal fit design compatible with most major pipette brands — including Gilson, Eppendorf, Thermo Finnpipette, Rainin, Sartorius, and BioHit — eliminating the need for brand-specific tips and simplifying lab inventory. Each bulk pack contains 1000 tips in a resealable bag, providing an economical solution for high-throughput labs, teaching facilities, and core facilities where daily tip consumption is high. The tips are fully autoclavable at 121°C for repeated use after sterilization, making them suitable for both sterile technique workflows and general benchtop applications.
Key Features
- Universal Fit Compatibility: Engineered with a tapered hub geometry that mates securely with most P200 pipettors — tested on Gilson Pipetman, Eppendorf Research plus, Thermo Finnpipette F2, Rainin Pipet-Lite, Sartorius Tacta, and BioHit Proline series. No loose fit, no tip ejection failure.
- Virgin Polypropylene Construction: 100% virgin PP resin with no recycled content ensures chemical purity and consistent mechanical properties. Smooth internal bore minimizes sample adhesion and ensures complete dispensing.
- Autoclavable Design: Tips retain dimensional stability after repeated autoclave cycles at 121°C (15 psi, 20 minutes). No melting, warping, or bore deformation — tips remain concentric and seal properly after sterilization.
- Bulk 1000-Piece Packaging: Resealable PE bag with zip closure protects unused tips from dust and contamination. Bulk format reduces packaging waste and per-tip cost compared to racked tips.
- Industry-Standard Yellow Color: Yellow tip color follows the universal micropipette color code for the 200µL range, enabling quick visual identification and reducing the risk of volume mismatches at the bench.
- Consistent Tip-to-Tip Precision: Precision injection molding maintains uniform orifice diameter and wall thickness across production lots, ensuring reproducible liquid handling with CV < 2% for aqueous solutions.
- Secure Pipette Seal: Flexible hub material forms an airtight seal on the pipette nose cone without requiring excessive mounting force, reducing user fatigue during extended pipetting sessions.
- Wide Chemical Compatibility: Polypropylene resists common laboratory reagents — acids, bases, organic solvents (ethanol, isopropanol, DMSO) — without leaching, swelling, or cracking.
Technical Specifications
| Parameter | Specification |
| Volume Range | 1–200 µL |
| Material | Virgin Polypropylene (PP) |
| Color | Yellow (industry standard for 200 µL) |
| Fit Type | Universal fit (compatible with most major pipette brands) |
| Packaging | 1000 tips per resealable bag |
| Sterility | Non-sterile; autoclavable at 121°C, 15 psi, 20 min |
| Cannula Length | ~54 mm |
| Tip Orifice | Fine point |
| Graduations | No graduation marks |
| Chemical Resistance | Acids, bases, alcohols, DMSO, common organic solvents |
Applications
- Molecular Biology: PCR master mix preparation, qPCR reaction setup, DNA/RNA dilution, restriction enzyme digests, ligation reactions, and gel loading.
- Cell Culture: Media aliquoting, trypsin/EDTA dispensing, antibiotic and supplement addition, cell suspension transfer in biosafety cabinets.
- Biochemistry: Protein assays (Bradford, BCA), enzyme kinetics measurements, buffer preparation, column chromatography fraction collection.
- Clinical & Diagnostic Labs: Sample dilution for ELISA, serological testing, reagent dispensing, and automated liquid handler tip replacement.
- Teaching & Training Labs: Bulk 1000-piece packs reduce cost per student in undergraduate biology, chemistry, and biotechnology practical courses.
- Quality Control: Routine liquid transfers in pharmaceutical QC, food safety testing, and environmental water analysis workflows.
Frequently Asked Questions
Q: Are these pipette tips compatible with my pipette brand?
A: MUHWA 200µL universal tips are designed with a universal fit hub that seats securely on most P200 pipettors, including Gilson Pipetman, Eppendorf Research plus, Thermo Finnpipette, Rainin Pipet-Lite, Sartorius Tacta, and BioHit. The tapered polypropylene hub flexes slightly to form an airtight seal without excessive mounting force. For critical applications, we recommend testing tip fit and ejection on your specific pipette model before committing to bulk use.
Q: Can these tips be autoclaved?
A: Yes. MUHWA 200µL pipette tips withstand standard moist-heat autoclave sterilization at 121°C (15 psi) for 20 minutes without deformation. Tips maintain their bore geometry and hub seal after autoclaving. For dry-heat sterilization (>180°C), we do not recommend these tips as polypropylene may soften at elevated temperatures. Always allow tips to cool to room temperature before use after autoclaving to avoid thermal expansion effects on pipetting accuracy.
Q: What color tip should I use for a P200 pipette?
A: The industry-standard color code for 200µL pipette tips is yellow. This convention was established by major pipette manufacturers (Gilson yellow tips, Eppendorf yellow epT.I.P.S.) and is now the universal visual identifier for the 200µL range. MUHWA follows this standard with yellow-tinted polypropylene — instantly recognizable on any lab bench. Using the correct color tip for each volume range (clear/white for 10µL, yellow for 200µL, blue for 1000µL) is a simple but critical step to prevent liquid handling errors.
Q: What's the difference between bagged tips and racked tips?
A: Bagged (bulk) tips are 1000 loose tips in a resealable bag — the most economical format, ideal for labs that refill their own tip racks or use tips from benchtop dispensers. Racked tips come pre-loaded in autoclavable racks (96 tips per rack), offering convenience and sterility assurance but at a higher per-tip cost. MUHWA bulk bag tips are the same quality as racked tips; the difference is purely packaging and cost. For sterile workflows, bagged tips can be loaded into racks and autoclaved as a complete unit.
Q: Do these tips contain DNase, RNase, or pyrogens?
A: These MUHWA 200µL pipette tips are manufactured from virgin polypropylene under controlled conditions but are not certified DNase/RNase-free. These standard tips are intended for general laboratory use. For applications requiring certified DNase/RNase-free or non-pyrogenic tips (e.g., RNA extraction, in vitro fertilization, endotoxin-sensitive cell culture), please contact our customer service — we offer certified RNase/DNase-free tip product lines upon request.
