| Type: | Tryptophan |
|---|---|
| Chemical Character: | Acidity |
| Appearance: | Powder |
| Transport Package: | 25kg/Drum |
| Specification: | USP |
| Trademark: | GW |
| Customization: |
|---|
Suppliers with verified business licenses
Audited Supplier | Test Item | USP32 |
| Assay | 98.5~101.5% |
| pH | 5.5~7.0 |
| Specific rotation[a] 25 D | -29.4°~-32.8° |
| Chloride(Cl) | ≤0.05% |
| Sulfate(SO4) | ≤0.03% |
| Iron(Fe) | ≤30ppm |
| Heavy metals(Pb) | ≤15ppm |
| Loss on drying | ≤0.30% |
| Residue on ignition | ≤0.10% |
1. Top quality materials with competitive price;
2. Large capacity of stable materials supply;
3. Safety and fast shipment by express/air/sea;
4. Sample order acceptable;
5. Professional and great packing as customized;
6. Convenient payment terms by T/T, Credit Card and online order;
7. Reply inquiries in time
Q: Who are you?
A: We are a professional and with more than 20 years experienced supplier and exporter for Industrial & fine chemicals, APIs, Reagent & Lab Supplies, and Food & Food Additives in China.
Q: How can you guarantee quality?
A: We could provide pre-production sample before mass production. And we also accept the final inspection(third-party) before shipment.
Q: Do you supply free samples?
A: Generally, we could provide free sample for quality evaluation, but the international shipping cost should be undertook by customers.
Q: Which payment terms do you accept?
A: We could accept the payment through T/T, L/C and Online payment.
Q: Can I pay with a credit card
A: Yes, you could feel free to make your payment through credit card. Please contact us for more details
Suppliers with verified business licenses
Audited Supplier 
){kind=link}
){kind=link}