Which wild swimming test kit is right for me

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Test for…	Detection levels
Iron	0.0 0.05 0.1 0.3 1.0 ppm (mg/l)
Copper	0.0 0.1 0.5 1.0 2.0 ppm (mg/l)
Nitrate (as N)**	0 2 10 20 50 ppm (mg/l)
Nitrite (as N)**	0 0.2 1 1.5 3 ppm (mg/l)
pH	2 4 5 6.5 8.5 9.5 10.5 12
Total Alkalinity	0 40 80 120 180 240 500 ppm (mg/l)
Total Chlorine	0 0.1 0.2 0.5 0.8 1 4 10 ppm (mg/l)
Total Hardness	0 50 120 250 425 1000 ppm (mg/l)
Free Chlorine	0 0.05 0.2 0.6 1.5 4 10 ppm (mg/l)
Sulfate	0 250 >500 ppm (mg/l)
Hydrogen Sulfide	0.3 0.5 1 2 ppm (mg/l)
15 min Bacteria* — Coliform / E.coli / Salmonella / Shigella / Enterobacter / Klebsiella	1,000 cfu/ml
24 hr Bacteria* — Coliform / E.coli	1 cfu/ml