Before reading this make sure u read my earlier post on "Water filters in Malaysia"
Now we all know that Panasonic being a product from Japan would at least have some quality tests seeing that its reputable companies. Thus for some people connecting a Pensonic twin filter to rid the main dust and primary filtering and then to filter it further via the Panasonic PJxxx series without the need to frequently change the Panasonic filters is a "peace of mind" combination.
** This is an edit : As of May 26, 2007
Warning : the Pensonic carbon
block or the Nishimen carbon block has found to increase of PPM. This is the
reason why you need to allow generous amount of water to go thru it, there are
some materials in those block that somehow dilute into the water.
observation, it took around 3 days or estimated 200 liters of water before the
reading will go down. However, i have tried instar carbon block, Pensonic carbon
block and Nishimen and ALL of them resulted in a rise of PPM even after it goes
down after some flush. The PPM reading can go up as much as 10 or more. (eg, 34
-> 44). This suggest there is something that is leaking in the carbon blocks
and diluted to the water. So I do not recommend using any of the said carbon
You should use both the pensonic + panasonic, you can use both
polypropylene on the pensonic Twin filter and depend only on the Panasonic for
the carbon filter.
The Panasonic uses carbon filter and DOES NOT increase
the PPM like the carbon blocks of Pensonic, Nishimen and InStar.
Cost of cartride for the Pensonic twin filter :
1. Polypropylene filters RM 8 for 3, some even RM 6.50 for 4. Interval to change: 2-3 months depending on water quality.
2 Optionally you can replace Polyprophylene with Doulton Ceramic, but the water pressure will need to be stronger. RM 40-RM60. Interval to change: 12 months.
PJ3RF filter : RM 37.50
Interval to change : 24 months (if used in combo, this is my estimated safe usage)
Initial Total Cost : RM 59 (pensonic) + RM 140 (Panasonic PJ3RF) = around RM 200
Running cost yearly : RM 16 (2 set of RM 8 polypropylene) + RM 37.50 = RM 53.50
RM 200 for initial setup, and yearly RM 53.50. DIY.
Below are images of how the unit would look like and how to combine them.
Here is an example of how dirty a Polyprophylene can be in just 4 days of use!