Product Description
Accurate melting point readings depend on uniform capillaries that keep bath liquid out and samples in view. These capillary tubes are long enough that the open end stays well above the bath surface, protecting the sample from contamination during heating.
This listing is for Kimble catalog number 34507-99: Melting Point Capillary Tube, Sealed at One End, 0.25 mm Wall, Case of 20. Tubes are made from borosilicate glass 3.3 and are 100 mm long when open at both ends, leaving about 90 mm after sealing. Versions sealed at one end are also offered. The 34502-99 and 34507-99 tubes have a smaller ID designed from USP requirements. Tubes are packed 100 per vial and 20 vials per case. LIGHT LABS supplies the complete DWK Life Sciences line, including Kimble, Wheaton and DURAN labware.
Key Features
- Bath-safe length – Open end stays above the bath surface.
- Open or sealed – Both ends open, or sealed at one end.
- USP options – Smaller ID tubes designed from USP requirements.
- Borosilicate glass 3.3 – Heat resistant for melting point work.
- Vial packed – 100 tubes per vial, 20 vials per case.
Specifications
| Catalog Number | 34507-99 |
| Brand | Kimble (DWK Life Sciences) |
| Description | Melting Point Capillary Tube, Sealed at One End, 0.25 mm Wall |
| Sold As | Case of 20 |
| Material | Borosilicate glass 3.3 |
| Length | 100 mm open; approx. 90 mm sealed |
| Wall | 0.20 mm; 0.25 mm |
| Packaging | 100 per vial, 20 vials per case |
Available Options
- 34500-99 – Melting Point Capillary Tube, Open at Both Ends, 0.20 mm Wall, Case of 20
- 34502-99 – Melting Point Capillary Tube, Open at Both Ends, 0.25 mm Wall, Case of 20
- 34505-99 – Melting Point Capillary Tube, Sealed at One End, 0.20mm Wall, Case of 20
Applications
- Melting point determination
- Compound identification
- Purity checks
- Teaching organic chemistry
