For 125ml narrow mouth (N/M) amber reagent bottles manufactured in China, you can find options in both glass and plastic (HDPE/PP) from several major suppliers.
Key Features
- Capacity: 125 ml (approximately 4 oz).
- Color (Amber): The dark tint blocks over 95% of UV and high-energy visible light, preventing photodegradation of sensitive substances like iodine, silver nitrate, or certain antibiotics.
- Mouth Type (Narrow): The “N/M” (Narrow Mouth) design is specifically for liquids. It minimizes evaporation, reduces the risk of accidental spills, and provides better control when pouring.
- Material: Usually made from durable borosilicate 3.3 glass (for thermal and chemical resistance) or HDPE plastic (for impact resistance).
- Closure: Typically features either a ground-glass stopper for an airtight, chemically inert seal or a leak-proof screw cap.
Common Specifications (Glass)
| Specification | Typical Measurement |
|---|---|
| Body Diameter | ~57 mm |
| Mouth Diameter | ~18–24 mm |
| Total Height | ~108–110 mm |
| Cap/Joint Size | Often ST/NS 19/22 or 19/26 |
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