Quats	Phenols	Aldehydes	Halogens	GeoSIL
Spectrum of Activity	Gram pos bacteria, fungi, yeast, sheathed viruses	Gram pos bacteria, Gram neg bacteria, fungi, yeast, unsheathed viruses	Gram pos/neg bacteria, fungi, yeast, spores, sheathed & unsheathed viruses	Gram pos/neg bacteria, fungi, yeast, spores, sheathed viruses	Gram pos/neg bacteria, fungi, yeast, spores, sheathed/unsheathed viruses, Amoebae, protozoa, Biofilm
Gaps in Activity Spectrum	Gram neg, mycobacteria, spores, unsheathed viruses, amoebae, protozoa, Biofilm	Spores, unsheathed viruses, amoebase, protozoa, Biofilm	Amoebae, protozoa, Biofilm	Amoebae, protozoa, Biofilm	NONE
Optimum pH	5 - 9	2- 8	4 - 9	5 - 9	2 - 8
pH Stability	1 - 12	1- 14	3 - 12	1 - 9	2 - 8
Albumin turbidity & decreased frothing in contact with beer	Strong	Not used, because of risk of alteration of colour & taste	Not used, because of risk of alteration of colour & taste	Strong	NONE
Reaction to Water Hardness	Poor	Very Good	Good	Good	Very Good
Albumin Loading Capacity	Poor	Very Good	Poor	Poor	Very Good
Dirt Loading Capacity	Poor	Very Good	Unsatisfactory	Good	Very Good
Surface Behaviour	Surface Residue	Absorbed by rubber & Plastics	High  vapour pressure, loading of ambient air	Surface resdue	Very Good
Odour	Odourless	Strong	Pungent	Stong	Odourless
Tolerance to skin	Good	Good in recommended concentration	Irritant to skin & eyes, risk of sensitisation	Irritant to skin & eyes, toxic in gaseous form	Very good in recommended concentration
Carinogenity (ADI) Acc Daily Intake	Good - 0.2 mg/kg	Yes, proven	Yes, proven	Yes, in form of Choloform	NONE, 0118 mg/kg (WHO)
KD50 oral, rats	350 - 900 mg/l	1830 - 3,000 mg/l	800 - 1,700 mg/l		> 2,000 mg/l
LD50 by inhalation			0.59 mg/l by air		> 59.9 mg/l
FRG Water Pollution Class	3	1 - 2	1 - 2	2 - 3	0
General Stability after dilution	Only short term, not reusable	Only short term, not reusable	Only short term, not reusable	Only short term	Very  Good, reusable
Temperature Stability	Moderate	Poor	Poor	Very Poor	Very good,
Corrosion risk with increasing temperature				Risk of corrosion with increasing temperature	No change with increasing temperature
Biodegradability in water treatment plants	90% after 5 days	100% after 3 - 7 days, neutralisation necessary	Good, but neutralisation necessary	Very poor, neutralisation necessary	100% after 24 hours
Biodegradability "Closed Bottle Test" OECD 301 D	65 - 70% degraded in 20 days	80 - 90% degraded in 20 days	75 - 90% degraded in 20 days		100% degraded in 2 - 4 hours
Universal Use	Limited	Limited	Limited	Moderate	Very Good
Determination of concentration	Not possible	Not possible	Not possible	Very good	Very Good
Fully Automatic Dosing	Not possible	Not possible	Not possible	Very Good (Chlorine only)	Very Good