The aim of the neutralisation testing is to find the strongest extract which does not cause a reaction in the skin – that is, that does not result in an increase in the size of the weal. After a positive reaction, a weaker dilution is tried, using the same procedure. If that is positive, the [...]
Activated Carbon (AC) filters are designed around activated carbon, a form of carbon which has been steam-treated. These work by adsorption, mopping up contaminant chemicals which pass through the filter and stick to the filter medium. They can absorb organic chemicals, pesticides and chlorine; many filter cartridges also contain ion exchange resins which reduce metals.
Suppliers [...]
There are two basic types of car filters:
• Air intake filters
• Portable interior filters
Air Intake Filters
Air intake filters work by fitting thick fabric or electrostatic filters over the air intake to the ventilation and heating system of a car, to prevent or reduce particles, such as pollens or fumes, entering the car. Air intake filters [...]
Toothpaste
Flavourings (such as menthol or thymol) and active ingredients in toothpastes can cause reactions. Herbal toothpastes can equally give you trouble. Here are two alternative toothpowders:
• Mix one part salt with two parts sodium bicarbonate. Apply to brush with a little water and use as usual.
• Use sodium bicarbonate on its own in exactly the [...]
If you are allergic to house dust mites, or to moulds, these are the most likely causes of reactions to older furniture. Both house dust mites and moulds thrive in damp, dark, warm places. If pets sleep or rest on furniture, the cause may be allergens that they have left behind. Try the avoidance measures [...]