Silver ion-substitution ball

The difference between silver ions and nano silver particles is that the sizes are different and the sterilizing effects also are different.

Silver ion substitution ceramic ball (Features)

The difference between silver ions and nano silver particles is that the sizes are different and the sterilizing effects also are different. As the result of comparing the characteristics of microorganism inactivation of nano silver particles with those of microorganism inactivation on silver ions by using a scanning electron microscope and a transmission electron microscope.

Based on the equal concentration of silver (Ag), silver ions have about 20 times higher antifungal and sterilizing effects compared to those of nano silver particles.
The higher silver (Ag) concentration and temperature become, the more the antifungal and sterilizing efficiency improves, which coincides with the same capacity even in the results of experiments of silver nano particles and silver ions.
While the antifungal and sterilizing capacity of nano silver particles improves at higher pH, silver ions show a high antifungal and sterilizing efficiency regardless of the change of pH.
Silver ions are absorbed in the blood of all internal Organs and finally discharged from the body, but there is a high possibility that nano silver can be deposited in internal organs because it is a particle.

The sterilization mechanism of the silver ion substitution ceramic ball can be divided into two types : one is that activated oxygen generated from the ball annihilates microbes and the other is that silver ions eluted from the ceramic ball inactivate microbes by damaging RNA or DNA inside the cytoplasm as the ions are absorbed into microbes. However, in case of nano silver, it damages greatly only the cells of microbes. Accordingly, we can know that the sterilizing effect of silver ions is greater than that of silver mano.

Antifungal and sterilization testing of the silver ion-exchange composite substitute agent

1. Strain used : Escherichia Coli ATCC 25922

Test item		Antifungal ball WP103			Test method
Test item		BLACK	Number of bacteria (CJU/100P)	Bacteria reduction rate(%)	Test method
Test item by Escherichia coil	At the initial stage	3.5 x 10⁶	3.5 x 10⁶	-	Presented by the client
	After 10 minutes		1.0 x 10³	99.97
	After 30 minutes		∠10	99.99
	After 60 minutes		∠10	99.99

2. Strain used : MRSA (Staphylococcus aureus Subsp aureus ATCC 33951)

Test item		Antifungal ball WP103			Test method
Test item		BLACK	Number of bacteria (CJU/100P)	Bacteria reduction rate(%)	Test method
Antifungal testing by MRSA	At the initial stage	1.8 x 10⁶	1.8 x 10⁶	-	Presented by the client
	After 10 minutes		9.7 x 10⁴	94.55
	After 30 minutes		5.1 x 10⁴	97.16
	After 60 minutes		4.0 x 10⁴	99.77

3. Strain used : Pseudomonas aeruginosa ATCC 15442

Test item		Antifungal ball WP103			Test method
Test item		BLACK	Number of bacteria (CJU/100P)	Bacteria reduction rate(%)	Test method
Antifungal testing by Pseudomonas aeruginosa	At the initial stage	2.38 x 10⁶	2.3 x 10⁶	-	Presented by the client
	After 10 minutes		1.0 x 10⁴	95.65
	After 30 minutes		1.31 x 10⁵	99.43
	After 60 minutes		∠10	99.99

4. Mold strains(mixed strains)

Aspergillus niger ATCC 9642 / Gliocladium virens ATCC 9645
Penicillium pinophilum ATCC 11797 / Aureobasidium pullalans ATCC 15233
Chaetomium globosum ATCC 6205

Test item	Anti-mold testing
	Cultivation test period
	After 1 week	After 2 weeks	After 3 weeks	After 4 weeks
Test results	O	O	O	O
Test method	ASTMG - 21 (2002)

# All of the above are the results of the tests (Escherichia coli, yellow taphylococcus, Pseudomonas aeruginosa, mold strains) made on June 18, 2009 at Korea Institute of Construction Materials.

Silver ion-substitution ball

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