| Category | Muffle Furnace |
| Model | Silver Refining Furnace |
| Max Temperature | 1000°C (1832°F) |
| Working Temperature | 900°C |
| Thermocouple Type | N (Nicrosil-Nisil) |
| Thermocouple Details | MgO insulated mineral, Inconel 600 sheath, 6mm diameter, Type N, Tolerance Class 2, 0 to +1100°C range |
| Heating Element | Kanthal A1 (FeCrAl) |
| Element Details | FeCrAl alloy with rare earth elements, Max temp: 1425°C, Superior cyclic performance |
| Chamber (MM) | 250 x 250 x 500 |
| Outer Body (MM) | 655.0 x 850.0 x 790.0 |
| Chamber Volume | 31.3 Litres |
| Volume (cu.ft) | 15.9 ft³ |
| Power Load | 11.11 kW |
| Power Supply | 440V, Three Phase |
| Gross Weight | 137.37 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: 250 x 250 x 500 MM, 25 x 25 x 50 CM and 10 x 10 x 20 INCH. Buyers searching for 1000 Degree Celsius Silver Refining Furnace 250 x 250 x 500 MM chamber; 1000°C Silver Refining Furnace 250 x 250 x 500 MM; 1000 Degree Celsius Silver Refining Furnace 25 x 25 x 50 CM chamber; 1000°C Silver Refining Furnace 25 x 25 x 50 CM; 1000 Degree Celsius Silver Refining Furnace 10 x 10 x 20 INCH chamber; 1000°C Silver Refining Furnace 10 x 10 x 20 INCH can verify the same physical chamber on this canonical product page before requesting price, GST invoice, packaging and delivery.
Trutherm manufactures 1000 Degree Celsius (°C) Silver Refining Furnace 250 x 250 x 500 MM Chamber for buyers who search by exact machine type, chamber size and 1000°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 250 x 250 x 500 MM chamber with usable chamber volume of 31.3 litre, approximate power load of 11.6 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.