Volumetric Flasks Brown 250ml
Guide Medlab 250ml brown volumetric flasks are precision‑grade amber volumetric glassware crafted from 3.3 borosilicate glass. As a popular intermediate‑size lab vessel, they are engineered for preparing light‑sensitive reagents and performing accurate quantitative dilution. The amber glass blocks ultraviolet rays and protects light‑vulnerable samples from photodegradation. Calibrated at 20 °C with durable etched graduation marks, these flasks are offered with either ground glass stoppers or plastic stoppers. Featuring solid chemical corrosion resistance, they support light‑sensitive quantitative experiments in chemical laboratories, pharmaceutical QC departments, environmental testing institutions and academic teaching labs.
Description
Volumetric Flasks Brown 250ml
Guide Medlab 250ml brown volumetric flasks are precision‑grade amber volumetric glassware crafted from 3.3 borosilicate glass. As a popular intermediate‑size lab vessel, they are engineered for preparing light‑sensitive reagents and performing accurate quantitative dilution. The amber glass blocks ultraviolet rays and protects light‑vulnerable samples from photodegradation. Calibrated at 20 °C with durable etched graduation marks, these flasks are offered with either ground glass stoppers or plastic stoppers. Featuring solid chemical corrosion resistance, they support light‑sensitive quantitative experiments in chemical laboratories, pharmaceutical QC departments, environmental testing institutions and academic teaching labs.
Product Specification
| Product Name | 250ml Brown Glass Volumetric Flask |
| Material | High Borosilicate 3.3 Amber Glass |
| Stopper Option | Glass stopper / Plastic stopper |
| Calibration Temperature | 20°C |
| Feature | Etched Calibration Mark, Flat‑bottom, Light‑shielding, Amber/Brown |
| OEM | Custom logo & packaging acceptable |
Application
Guide Medlab 250ml brown volumetric flasks are precision‑grade amber volumetric glassware built for accurate volumetric handling of light‑sensitive samples. They are widely applied in chemical analysis, pharmaceutical quality control, environmental monitoring and university teaching laboratories.
• Preparation and volumetric dilution of light‑sensitive standard solutions and reagents
• Quantitative preparation of photolabile chemical, pharmaceutical and environmental test samples
• Precise constant‑volume sample handling for analytical testing and instrumental detection
• Quantitative experimental teaching and sample preparation for research institutions.
Quality Control
Packing, Storage and Transportation
● Packing
250ml brown volumetric flasks are securely packed in sturdy corrugated cartons, 72 pcs per carton. Outer cartons are clearly marked with product name, specification, quantity, net weight, gross weight and volume. Palletized packing can be arranged upon request. Each unit is protected by inner boxes before outer‑carton packaging.
● Storage
Store the products indoors under clean and dry conditions. Keep away from collision impact and corrosive chemicals to protect glass surface and volumetric accuracy.
● Transportation
Sea, air and railway transport options are all available. Avoid dropping goods during loading and unloading. Full 20ft / 40HQ container shipment is recommended. We offer workshop loading and direct delivery service to seaports.
| Specification | 5ml | 10ml | 20ml | 25ml | 50ml | 100ml |
|---|---|---|---|---|---|---|
| Qty per Carton | 400pcs/carton | 400pcs/carton | 240pcs/carton | 240pcs/carton | 200pcs/carton |
120pcs/carton |
| Specification | 200ml | 250ml | 500ml | 1000ml | ||
| Qty per Carton | 72pcs/carton | 72pcs/carton | 48pcs/carton | 24pcs/carton |
FAQ
Q1: Do you offer free samples?
Yes, we provide free samples (usually 5‑10pcs) for your evaluation. Shipping cost is covered by the customer or negotiated separately.
Q2: What is minimum order quantity(MOQ)?
MOQ varies by products, for this 250ml brown glass volumetric flask, MOQ is 5 cartons; for other glass labware, MOQ would be 1‑5 cartons, we suggest adding pallet to protect glass goods.
Q3: What payment methods do you accept?
We accept T/T(bank transfer) or pay through Alibaba.
Q4: Can I add my own design or logo to the product?
Yes, we provide OEM/ODM service .
Q5: Can you provide CE and ISO for your products?
Yes, all products include complete technical documentations including CE, ISO. Material and calibration test reports can be provided upon request.
Q6: Do you support shipping insurance and freight options?
Yes, we offer sea, air and courier shipping with optional full insurance coverage.
Q7: How do you prevent scratches & deformation during shipping?
We pack each flask with individual inner protection and thick 5‑layer corrugated cartons. The damage rate is controlled below 1%.
Q8: What is your policy for damaged goods?
If scratched, broken or missing items are found upon receipt, please send photos/videos within 48 hours. We will arrange free replacements or corresponding refunds.
Q9: What is your typical lead time?
For custom engraved or bulk orders, it usually takes 15–25 days.
Q10: Do you have a price list for bulk purchases?
Yes, we offer tiered pricing based on order volume. Please contact our sales team for a formal quote.
Q11: Do you participate in international labware exhibitions?
Yes, we regularly attend exhibitions like ARABLAB, ACHEMA, and Analytica.
Q12: What stopper options are available for this brown volumetric flask?
We supply ground glass stopper and plastic stopper, select suitable one according to your light‑sensitive reagents.
Q13: Can this volumetric flask be heated directly?
No, direct heating is forbidden, it will cause volume deviation and damage the precision calibration of the glassware.
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