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BioGuard Power Chlor is the next generation in granular pool care products. Under development and extensively tested for more than 3 years, this patented sanitiser, algaecide and shock replaces traditional granular swimming pool sanitisers and shock products containing calcium hypochlorite. Power Chlor kills bacteria and algae, removes swimmer contaminants, clears up cloudy water, helps prevent algae and is protected against UV degradation by sunlight.

Power Chlor provides this total consumer benefit package because of its patented amalgamation of compounds. The ingredients are not merely blended together, but rather combined through a unique manufacturing process that ensures each individual granule contains all of the compounds. This revolutionary technology is the key to performance, with each compound working with the others to provide clear sanitised pool water.

While trichloroisocyanuric acid is the workhorse of Power Chlor, killing bacteria and algae, an additional compound, sodium tetraborate pentahydrate, has been added to help prevent algal growth and enhance bather comfort. As algae and bacteria are being killed, the filtration enhancer and clarifier aggregates particulate matter, including dead algae and bacteria. These aggregates are then trapped in the filter to provide crystal clear water. Another key ingredient, cyanuric acid, protects chlorine in the pool water from the degrading effects of sunlight. This keeps chlorine in the pool to kill algae and bacteria, saving money and improving bather safety.


Power Chlor is easy to use. The formula is designed to be applied at the rate of 15 - 30 grams per 10,000 litres directly into the skimmer. With no pre-dissolving necessary, Power Chlor makes pool care a breeze. It is also possible to add Power Chlor directly to the pool but, if the potential bleaching of vinyl, coloured plaster or fibreglass surfaces is a concern, the granules should be brushed along the pool floor until they completely dissolve.





Action Result
Acid (Trichlor)
As trichlor dissociates in water, it provides
hypochlorous acid (free chlorine) and cyanuric acid.
Trichlor is a chlorinated isocyanurate, a class of
compounds that were first introduced as sanitisers
into swimming pools to control bacteria, algae, and
swimmer contaminants in 1958. Chlorinated
isocyanurates are currently the most popular
compounds designed specifically to sanitise pools.

Kills bacteria and algae,
destroys organic wastes
Sodium Tetraborate
Boric acid and tetraborate are patented algaecides
and algaestats. Although the mechanism of action of
boron compounds is not well understood, they are
stable and stay in the pool to help prevent future
algae outbreaks.
Prevents algae


This ingredient combines small soluble and insoluble
material into larger particulates. These larger
particulates can then be removed easily by the
filtration system.
Makes water crystal clear
Cyanuric Acid

This compound prevents UV degradation of chlorine.
Scientific studies have shown free chlorine often
lasts 3-4 times longer in outdoor pools treated with
cyanuric acid than those without such stabilisation.

Protects chlorine loss due to


The CONSUMER benefits from using Power Chlor because the product:

  • l Provides available chlorine (present as trichloroisocyanuric acid) that kills bacteria and algae and removes swimmer contaminants.
  • l Has a separate algae preventative (sodium tetraborate pentahydrate).
  • l Has a clarifier and filtration enhancer making the pool crystal clear.
  • l Has a UV protector so that less chlorine is lost due to the degrading effects of sunlight.
  • l Unlike calcium hypochlorite, does not cloud the water as all components are completely soluble.

The RETAILER benefits from using Power Chlor because the product:

  • l Is a new product which will generate consumer excitement.
  • l Is a new patented product that is not a commodity (i.e. pricing pressures will be less).
  • l Is rated as a non-oxidiser, eliminating storage restrictions.
  • l Is much safer to store than calcium hypochlorite from a fire safety standpoint.

Frequently Asked Questions (FAQ)

Question Answer Comments
What are the ingredients in Power
Chlor and what is the chlorinating
compound in it?
The chlorinating compound in
Power Chlor is trichloroisocyanuric
acid (trichlor). This product also
contains a water clarifier, a filtration
enhancer, an algae preventative
and a UV protector.
What is the purpose of Power
Chlor? What does it do?
It sanitises and/or shocks pool
water. Beyond sanitation and
shocking, it clarifies pool water, kills
and prevents algae, and the UV
protector protects chlorine from
sunlight "burn-off".

Will Power Chlor kill algae?
Yes. Power Chlor can be used for
algae treatment. Follow specific
directions on the label for light,
moderate and heavy algal growth.
If needed, repeat the treatment.
For guaranteed results in 24
hours for all algae types,
including mustard algae, use
Power Chlor in conjunction with
MSA II following its label
How often do I need to add Power
Chlor when I am using it for
routine chlorination, and how
much do I add?
For use as a sanitiser/routine
chlorination, add 15 - 30 grams per
10,000 litres every day, every
second day, or as often as needed
to maintain a chlorine residual in
the range 1 - 3 ppm.
The amount of product required
and frequency of addition for
routine chlorination will vary with
the number of swimmers, water
temperature and amount of rain.
Operate the pump a minimum 10
hours per day for best results.
Do I still need to add a water
clarifier if I am using Power Chlor
for routine chlorination or as a
shock treatment?

No. Power Chlor contains a water
clarifier. Most of the time, Power
Chlor will keep your pool clear.
Other water clarifiers are
compatible with Power Chlor if
you choose to use them for
clearing cloudy water quickly.
Can Power Chlor be used as a
shock treatment with my tablets
that I am skimmer feeding since it
says not to mix this product with
any other pool chemical product?

Yes. If tablets are being applied for
routine chlorination in the skimmer,
remove the skimmer basket with
the tablets as the Power Chlor is
applied and follow label directions.
CAUTION: When still in the
concentrated form, no pool
chemicals should be mixed
Do I need to pre-dissolve Power
Chlor before adding it in my pool?
No. Power Chlor should not be
predissolved. If the pool has a
bleachable surface, such as vinyl,
coloured plaster, painted or
fibreglass, use skimmer application
with the circulation system
operating, or add directly to pool,
brushing visible product until
completely dissolved to avoid

Can I use Power Chlor in my spa?

No. Power Chlor is designed
specifically for pool usage. For spa
application, there is a complete line
of SpaGuard products.

Can I use Power Chlor in my nonchlorine

If your non-chlorine system is
based on biguanides like Baquacil,
do NOT use Power Chlor. If your
system directions call for shocking
with a chlorine shock, you may use
Power Chlor.
Can I use Power Chlor if I use
brominating products to sanitise
my pool?
Yes. The oxidiser in Power Chlor
will re-activate the bromide,
causing the bromine residual to
increase in the pool. Follow label
directions on each product for
proper application method.
Can I use Power Chlor to open my
Yes. Follow label instructions for
initial start-up.
For winter closing, Power Chlor
may be used where the method
calls for a chlorine shock in the
closing process.

If I am using Power Chlor as a
sanitiser and shock, do I need to
add anything else other than this
sanitiser/shock/algaecide with
Yes. You must still balance the
pool water for pH, alkalinity and
calcium hardness. The primary
role of Power Chlor is as a sanitiser
and a shock. The clarifiers and
algae preventatives will aid in
preventing cloudy water and algae
occurrences. In extreme
circumstances, you may need to
supplement Power Chlor with an
algaecide, such as MSA II, or a
clarifier, such as Polysheen Plus.

Balancing includes pH, calcium
hardness, and total alkalinity.

If I am using Power Chlor as a
shock treatment, will I ever need
another type of chlorinating shock
or non-chlorine shock?
Can Lite be used with this
product? How does this product
differ from Lite?
You do not need to use Lite with
this product. Power Chlor is an allinclusive
sanitiser and shock
product. However, if you choose
to, you can use Lite as a shock
while you are using Power Chlor as
a sanitiser. As with all chemicals,
you should not mix the
concentrated products, nor attempt
to pre-dissolve the two products

What treatment programs are
incompatible with Power Chlor?

Pools treated with a biguanide
system like Baquacil are NOT
compatible with Power Chlor.

What products are incompatible
with Power Chlor?
Power Chlor should only be applied
in its dry form to swimming pool
water, either through the skimmer
or directly into the pool water
according to label directions. As
with all chemicals, Power Chlor
should never be mixed with other
chemicals in their concentrated
form. In particular, calcium
hypochlorite is extremely
incompatible with Power Chlor
This product completely replaces
all uses you may have for
calcium hypochlorite. We supply
a clean measuring cup so that
when you scoop out product, the
cup is free of other chemical
What products or treatment
programs are compatible with
Power Chlor?
All pools treated with chlorine or
bromine based systems are
compatible with the use of Power
Power Chlor is designed to
replace calcium hypochlorite as a
daily sanitiser and as a shock in
chlorine- or bromine-treated
Does this product kill plants if
It is possible that water from a pool
containing Power Chlor and other
pool chemicals could be
detrimental to plants and lawns.

It is always advisable to direct
backwash water away from
plants as the flooding itself that
occurs with the backwashing can
be detrimental to plants.

What happens if Power Chlor
Power Chlor is a granular product
that is not affected by freezing.
Store in a cool, dry location not
accessible by children.

How does the water clarity using
Power Chlor compare to calcium
The water will be clearer because
Power Chlor has a separate
clarifier, filtration enhancer and
algae preventative. Additionally,
you should no longer notice any
haziness so often observed after
calcium hypochlorite is applied to
pool water.
How important is it that the pool be
Because chlorine is the killing
agent, it is imperative that the pH is
within the correct 7.2 - 7.6 range –
the same as for calcium

How fast can I add the Power
Chlor to the skimmer?
It is important to pour the product
slowly so that it will allow the
product to be dispersed and not

A good method to be sure you
are not adding too quickly is to
sprinkle the contents of the
scoop, rather than dumping the
entire contents.

Why should I not pre-dissolve
Power Chlor?
Power Chlor will not pre-dissolve
rapidly in a small volume of water,
therefore you should apply through
the skimmer or broadcast the
product directly into the pool water
according to the label directions.

If water splashed back from the
skimmer into the scoop, are there
any steps I should take?
If water splashes into the scoop
during application, finish emptying
the scoop into the skimmer, and
then rinse the scoop in the water of
the pool. If any granules of product
fall to the bottom of pool surface
that is vinyl, painted plaster or
fibreglass during this rinsing
process, use a brush to remove
them off the surface and prevent
potential bleaching. Do not return
the scoop to the original container
until scoop is free of contaminants
like leaves or dirt, and is completely
dry .

How long must I wait to swim after
the addition of the Power Chlor?

Until the free available chlorine
residual is between 1 and 3 ppm.

Remember, it is always important
to have at least 1 ppm free
available chlorine residual
present to provide proper

What is the shelf life of Power

Power Chlor is a new product, and
shelf-life data indicates that this
product can be expected to retain
its effectiveness for at least 3 years
when stored under proper

Avoid storing in wet or humid
areas, especially after opening.
Always keep out of direct

Does this product contain the
stabiliser cyanuric acid (CYA)?

Yes. Cyanuric acid helps to protect
chlorine from sunlight degradation,
so that you are able to use 3-4
times less chlorine than pools
without stabiliser. Chlorinated
products containing cyanuric acid
has been used for stabilizing
chlorine since 1958. These
products are the number one
choice of pool professionals for
sanitising pool water.
Can I use Power Chlor to satisfy a
chlorine demand?
Yes. To satisfy a chlorine demand,
apply Power Chlor as directed for
a shock treatment and recheck
chlorine residual 4 hours after
application. If the chlorine
demand is not satisfied as shown
by a free available chlorine
residual of at least 3 ppm being
present, repeat the application.
If I followed shocking directions,
and the chlorine residual is 0 ppm
free available chlorine after 4
hours, should we retreat with
Power Chlor?
Yes. Simply add Power Chlor until
at least a 1 ppm free available
chlorine residual is maintained after
4 hours.

I understand high levels (over 100
ppm) of CYA are bad because
they cause bacteria or algae to
grow and reduce my chlorine level
in the pool. Is that true?

No. A large body of scientific
evidence shows that cyanuric acid
does not slow chlorine’s ability to
kill bacteria and algae in pool water
conditions. This conclusion
contradicts some lab studies from
the 50’s and 60’s which were
performed with purified water, not
pool water. The purpose of
cyanuric acid is to protect chlorine
from sunlight burn off, so actually
the more cyanuric acid in the pool,
the longer the chlorine in your pool
stays around to fight bacteria, algae
and other swimmer contaminants.
Cyanuric acid has been used for
over 40 years with great success.

I have a question related to fire
safety or product safety.
Power Chlor has passed UN Burn
Test 01, identifying it as a nondangerous
good. As such, there is
no requirement for a Class 5.1
Oxidising Agent diamond.
Nevertheless, it should not be
stored less than 3 metres from
calcium hypochlorite or any Class 8
Corrosive compound.
Trichloroisocyanuric acid and
sodium tetraborate pentahydrate
are Schedule 5 poisons. If
poisoning occurs, contact a doctor
or the Poisons Information Centre
on 13 1126 (Australia) or 03 474
7000 (New Zealand). If swallowed,
do NOT induce vomiting - give a
glass of water.
All other questions related to these
subjects should be directed to Bio-
How long does a free available
chlorine residual last using Power

Due to the sunlight protection, you
will use 3-4 times less chlorinating
product than in a calcium
hypochlorite swimming pool that is
not stabilised.

The length of time that a chlorine
residual is present in the pool
from the application of any
chlorinating product is dependent
upon many factors, including
temperature of the water, bather
load and rain and windblown
debris introduced into the pool.

The above information is supplied by Bio-Lab and represents its best interpretation of available technical information at the time of preparation. The sole purpose is to supply factual information to Bio-Lab customers. It is not to be taken out of context nor used as support for any other claim not made herein.