About Brass Monkey Ice Ltd
Salt Flake Ice is made at our plant sited at the entrance to the Ports of
Auckland wharf at Onehunga. We use two Atlas Slice Ice machines that can
be run individually or in tandem. Each machine has a production capability
of one tonne per hour so the plant is capable of producing 50 tonne per day.
The machines use potable water from the city supplier – Metrowater.
Water is sprayed on to twin vertical cylindrical drums, rotating slowly on each
The drums have refrigerant circulating within them which causes
the external surface of the drum to become extremely cold which in turn freezes
the water which has been sprayed on to them.
A set of knives or cutters are placed with slight clearance, vertically against
each drum and these knock the forming ice from the drum as it revolves. The tempreature
of the flake ice is between -6 degrees C and -12 degrees C in flakes of various
size up to 6 sqare cm and 3mm thick.
It falls off the machines and into a refrigerated, insulated bin (120 tonne
capable) positioned below the ice makers, where it is stored at similar temperatures
Salt is added to the water just prior to it being sprayed on the drums. This
is done via a dosing pump drawing from a brine tank and adds up to 500 grams
of salt per tonne of ice, corresponding to a maximum of 2.2 litres of saturated
salt solution per tonne of ice. The salt content is barely discernable
to taste. It is added to the water to assist the formed ice to break away
from the drums and to break away in larger pieces.
Salt Flake Ice has been the preferred medium in the Commercial Fishing Industry
for lowering the temperature of fish when it is initially caught. This
is often done by loading the catch into slurry bins (combination of seawater
and flake ice) at approximately 3 degrees C to quickly bring their temperature
After a short period they are then transferred to 30kg capacity fish bins
where they are layered with flake ice on the bottom, between layers and on top.
The flatness of flake ice offers a large surface area whereby rapid and efficient
cooling of the product is enhanced.
This guarantees the freshness and natural appearance of the fish for up to
a five day trip back to port and the markets.
- We operate under guidelines formulated between the Ministry of Fisheries
and the previous owners of Brass Monkey Ice Ltd.
- We use potable water as supplied by our Local Authority via Metrowater. Salt
is Pacific Grade 11 Sola Crushed Course supplied by James Crisp Ltd.
- We carry out a sanitizing program at all points of possible contamination
which basically is regular spraying using a Ministry of Fisheries approved sanitizing
agent called Enviro Safe.
- We engage NZ Laboratory Services Ltd. to regularly test our product for
both Total Coliforms & Faecal Coliforms.
Recreational fishermen are realizing that technology used by the Commercial
fishermen for years can be applied to their catches. Salt Flake Ice is
colder than regular party ice and hence lasts longer - up 3-5 times longer in
quality chilly bins - and the salt assists in reducing bacteria on the fish skin,
hence maintaining a fresher and better tasting top quality fish for the table.