Processes & Techniques
How each step of extraction, purification and processing works, and the equipment behind it.
Processes & Techniques Induction Melting for Gold and Silver: Crucibles, Tongs and Set-Up
October 22, 2026
7 min read
An induction melting furnace gives jewellers and refiners a clean, controllable way to melt gold and silver without an open flame. The furnace itself is only part of the system. The crucible, the tools, the electrical supply, the cooling water and the room around it all decide whether your first melt goes smoothly. This guide explains how induction heating works, why graphite crucibles are the usual choice, and how to plan an induction furnace setup that is safe from day one.How Induction Heating WorksAn in [...]
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Processes & Techniques From Crude Extract to Clear Distillate: How Botanical Oils Are Purified
October 22, 2026
5 min read
A crude plant extract is a mixture: the oils and aromatic compounds you want, plus waxes, fats, pigments, leftover solvent, water and plant sugars that you don't. Turning that crude extract into a clear, consistent, refined oil is a sequence of separation steps, each one removing a different kind of impurity. Skip a step, or do them in the wrong order, and the next step struggles.
This guide follows that sequence from start to finish, as it is used for essential oils, flavour extracts and other botanical co [...]
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Processes & Techniques Removing Chlorophyll and Colour from Botanical Extracts
October 22, 2026
6 min read
Anyone who has made a plant extract knows the problem: the finished oil comes out dark green or brown, tastes grassy and bitter, and looks nothing like the clear, golden product the customer expects. Most of that colour and harsh taste comes from one family of molecules: chlorophyll. The good news is that chlorophyll is one of the easier impurities to deal with, once you understand what it is and where it gets into your process.
This guide explains what chlorophyll is, why it ends up in extracts of herbs, s [...]
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