Why did SteriPEN treat my water for 58 seconds for a 0.5 Liter dose (instead of normal 48 seconds)?
When the lamp is below 50°F/10°C, the 0.5 liter dose duration is lengthened by 10 seconds. This is to compensate for the slower “warm-up” portion of the dose. This lengthening of the dose only happens in the 0.5 liter dose since the “warm-up” phase represents a larger percentage of the total dose than it does in the 1.0 liter 90-second dose. When the lamp is below 50°F/10°C, the 0.5 liter dose duration is lengthened by 10 seconds. This is to compensate for the slower “warm-up” portion of the dose. This lengthening of the dose only happens in the 0.5 liter dose since the “warm-up” phase represents a larger percentage of the total dose than it does in the 1.0 liter 90-second dose.