FERRIC CHLORIDE and AMMONIUM PERSULPHATE Etching solutions

Here at RCS will be selling both Ferric Chloride and Ammonium Persulphate
in a few weeks time.          all costings are subject to GST (of course)

Costs : before we start to officialy have them both for sale I have made
some preliminary costings, and it appears that Ferric Chloride (Liquid form
- shop sales only) will be around $9.oo per 500mL and we aim to have this
in 500mL & 5Litre plastic containers but as far as Ammonium Persulphate, no
costings have been made yet, but it has the advantage in being powder or
granules, so it can be handled more easilly, as so we are advised, I will
seek more info from the Post Office, or it may have to go by normal courier

Outline Properties of both
Commonsense eye protection should be used against 'splashes' this can be
full wrap around eye protection equipment or simple swimmers goggles,
anything to protect your eyes for any reason.
If splashed, plenty of water to rinse, then quick trip to doctor/hospital.

FERRIC CHLORIDE:
Good Points:
  Cheap and relatively safe to use.
  Does NOT require above normal room temperatures to operate
  Still the cheapest form of etchant, ever.
  Etching Containers are cheap plastic etc.
Bad Points :
  Messy and stains like all hell if dropped on to any concrete, clothing
  It will not make you very popular around the house or school, so CARE in
  handling MUST be exercised
  Only used by about 10% of circuit board manufacturers
  Cannot be used on Plated Through Circuit boards
  Cannot be sent through the Aust Post, as it can break,
  Ruins the taste of scotch whisky or bourbon, and is NOT ADVISED.
  Makes lots of Evidence for Divorce if used in Bathroom/Kitchen/Laundry.
  Does not like Aluminimum containers, violent dissolving reaction
  Shop Sales only at 41 Arlewis st  CHESTER HILL 9738-0330

AMMONIUM PERSULPHATE
Good Points :
  Used by 80%+ of all commercial board manufacturers
  And by nearly all schools/tech colleges because of very low stainability
  Can be transported, if properly double wrapped
  Very clean etch, easy to see 'saturation'
Bad Points :
  Does require double pan water jacket heating to around 50-60 deg C.
  Odour of ammonia present (when heated), creates tears.
- - - - - -
The use of any chemical, must require common sense and care with handling
To ignore these facts are folly, and subsequently many trips to doctors
and hospitals will occur if you take your eye of the ball and mishandle.

Ferric Chloride appears to work best at 36Be-42Be (Baume) which is about
1.333 in specific gravity, the solution we sell is stock (raw), then it is
approx 45Be (slightly thick/soupy) and when translated to common units that
is 1.45 sg, so you should add about 100mL of water per 500mL of RCS FeCl
(any chemists out there to advise more accurately) but a mild dilution of
our product IS required, we (unlike others) do NOT sell it 'diluted'.
We have made many random tests over the last 50+years, and raw, conc. FeCl
is useless, you must dilute it or it's just too slow. General agitation 
accross the surface to remove the etched copper is essential, either a 
High Pressure Magnetic Fluid Pump, or air bubbles from the bottom of the 
plastic tank up/over the panel to be etched must be done. 
We can sell a product, which remove's the stains etc however it is possibly 
banned by the Geneva convention, but it sure removes ferric stains.