| Category | Muffle Furnace |
| Model | Silver Refining Furnace |
| Max Temperature | 1400°C (2552°F) |
| Working Temperature | 1300°C |
| Thermocouple Type | B (Platinum-30% Rhodium) |
| Thermocouple Details | High purity alumina insulation, Platinum-Rhodium alloy sheath, 8mm diameter, Type B, Tolerance Class 2, 200 to +1700°C range |
| Heating Element | Silicon Carbide (SiC) |
| Element Details | Max temp: 1600°C, High power density, Brittle material, SiC heating elements |
| Chamber (MM) | 245 x 235 x 400 |
| Outer Body (MM) | 655.0 x 840.0 x 675.0 |
| Chamber Volume | 23 Litres |
| Volume (cu.ft) | 13.4 ft³ |
| Power Load | 10.24 kW |
| Power Supply | 440V, Three Phase |
| Gross Weight | 106.51 kg |
| Chamber Shape | Square |
This furnace is part of a system used to purify silver, separating it from base metal impurities or other precious metals. Operating at temperatures around 1000°C, it may use processes like cupellation or electrolytic refining. The working principle in cupellation involves melting the impure silver with lead in an oxidizing atmosphere; lead and other impurities oxidize and are absorbed into a porous cupel, leaving pure silver behind. Its purpose is to produce fine silver (99.9%+ pure) from scrap, coins, or mined bullion for industrial, investment, and artistic uses.
Equivalent chamber references: 245 x 235 x 400 MM, 25 x 24 x 40 CM and 9 x 9 x 16 INCH. Buyers searching for 1400 Degree Celsius Silver Refining Furnace 245 x 235 x 400 MM chamber; 1400°C Silver Refining Furnace 245 x 235 x 400 MM; 1400 Degree Celsius Silver Refining Furnace 25 x 24 x 40 CM chamber; 1400°C Silver Refining Furnace 25 x 24 x 40 CM; 1400 Degree Celsius Silver Refining Furnace 9 x 9 x 16 INCH chamber; 1400°C Silver Refining Furnace 9 x 9 x 16 INCH can verify the same physical chamber on this canonical product page before requesting price, GST invoice, packaging and delivery.
Trutherm manufactures 1400 Degree Celsius (°C) Silver Refining Furnace 245 x 235 x 400 MM Chamber for buyers who search by exact machine type, chamber size and 1400°C temperature rating. This page is specific to the MM dimension version, so the chamber size is presented in the unit normally used in the buyer's drawing, tender or purchase request.
This configuration is suitable when the sample load must fit a 245 x 235 x 400 MM chamber with usable chamber volume of 23 litre, approximate power load of 10.2 kW, square chamber profile. It is commonly selected for laboratory, QC, metallurgical, ceramic, pharmaceutical and industrial heat-treatment work requiring stable heating and repeatable process conditions. Typical use includes general laboratory and industrial heat-treatment applications requiring stable, repeatable temperature control.
Where sample volume and process type vary week to week, a general-purpose muffle furnace avoids the cost of maintaining several process-specific furnace types.
A muffle furnace is usually the first furnace a lab installs, since it covers the broadest share of everyday heating, drying and ashing tasks before more specialised equipment is added.
As a general-purpose muffle furnace, this model covers a broader range of routine heating tasks than a process-specific ashing, tube or sintering furnace, making it the practical default when the lab runs mixed sample types rather than one dedicated process.