Labino Softening Point
The Model SP-3A was conceived, developed and patented by Dominick Labino, an internationally renowned glass scientist and artisan, who recognized the glass industry’s need for a simple, rapid softening point determination.
This simple, low cost device is a modified parallel plate viscometer whose results correlate very well with Littleton Softening Point Temperatures that are determined according to ASTM C-338. Solid glass samples are used instead of glass fibers. Consequently, sample preparation is easier, particularly for glass compositions that are difficult or impossible to form fibers.
Model SP-3A
General
A complete and compact bench-top instrument for approximating the softening point of solid glass pieces by the Labino Method.
The Model SP-3A is a unique, patented system that was designed as a low cost instrument for quickly and easily measuring the Littleton Softening Point of glasses without pulling fibers. The tests are performed on a small blocks of glass samples.
Includes
- 1000°C furnace
- programmable process controller
- stainless steel sample holder and penetration rod
- 100 stainless steel ball bearings
- one vial of high alumina powder
- Type “K” thermocouple
- and instruction manual.
Specifications
| Model | SP-3A |
| Warranty | 12 Months |
| Cooling | Air assist (15 psi, 3 cfm, dry, and oil free) |
| Atmosphere | Air |
| Temperature Range | RT to 1,000°C |
| Furnace | Tube style |
| Micro-switch travel resolution | 0.0001 |
| Temperature Resolution | 1°C or °F |
| Thermocouple | Type “K |
| Ball bearing size | 1/8 |
| Sample Size | 5 mm square x 3 mm thick |
| Power Requirements | 120vac/5amp or 240vac/2.5amp, 50/60 Hz |
| Power Control | SSR |
| Sampleholder | Stainless Steel |
| Penetration rod | Stainless Steel |
| Furnace Movement | Manual lift |
| Temperature Control | Dwyer 16010 controller with peak hold |
| Dimensions | 8 x 8 x 22 (20 x 20 x 56 cm) |
| Weight | 11.3 lbs. (5.1kg) |