Application consultation
Tailored recommendations for reagents and experimental design.
- Bright
- Stable
- Reproducible
Illuminate life scienceEmpower your data
Qihe Biotech supplies high-quality fluorescent dyes, oligo-synthesis reagents and bioconjugation reagents for life-science research and diagnostics — with core products in stock for fast nationwide shipping.
- 6,200+
- Product SKUs
- 300–900 nm
- Wavelength range
- 120+
- Major cities Fast & reliable delivery
Find the right product, faster
Search by product, dye name, CAS, target, or application.
The questions labs ask most
How do I choose the right fluorescent dye?
Set Ex/Em to match the excitation source and filters on your instrument, then pick the reactive group.
The dye chart plots in-stock fluorophores by Ex/Em and lists the conjugate forms of each.
View the dye chartDoes every lot come with a certificate of analysis (CoA)?
Qihe Biotech confirms every production lot by both NMR and HPLC-MS.
The CoA for a given lot is retrievable online by catalog number and lot number.
Look up a CoAWhere can I find prices and pack sizes?
Each product page lists prices by pack size; unpriced sizes can be quoted on request.
Several pack sizes per product — pick the one that matches your usage.
Browse the catalogHow long does delivery take?
Orders reach major cities in mainland China in 1–3 days; overseas transit time is confirmed within one business day.
Orders confirmed before 15:00 on a business day ship the same day.
Shipping & returnsHow much is shipping?
Free over ¥500 within mainland China; cold chain ¥25 and dry ice ¥50 per order.
Below ¥500 a ¥15 flat fee applies; overseas shipping is quoted per destination.
See shipping ratesHow should products be stored?
Products fall into three classes: −20°C frozen, 2–8°C refrigerated, and dry at room temperature.
All must be kept sealed and away from light; avoid repeated freeze–thaw for −20°C items.
Storage conditionsHow quickly are technical questions answered?
Qihe Biotech answers technical questions within 24 hours.
Covering reagent selection, protocols and troubleshooting.
Contact the teamHere to accelerate your science
Protocol guidance
Detailed protocols and practical notes for reproducible results.
Troubleshooting
Rapid help for labeling, imaging, storage and handling questions.