About dispenser control - Ritter Medical

According to DIN EN ISO 8655, dispensers have to be controlled minimum once per year. Therefore, you can send your devices including a calibration order to Ritter Medical. We are glad to take care about the inspection of your or your customer s dispenser.

Nevertheless, we will leave the decision about the inspection of your devices up to you. No matter if you would like to make the calibration of your dispenser in-house or by yourself, please follow the detailed instruction of DIN EN ISO 8655-1/7.3. The enclosed chart provides the necessary technical data for a successful calibration.

Tip Size	Dispensed Volume in μl		Measurement deviation determined by the system in %		Incidental measurement deviation in %
	3% Vnom	10% Vnom	3% Vnom	10% Vnom	3% Vnom	10% Vnom
0.05 ml	1.5	5	± 4	± 8.0	≤ 4.0	≤ 4.0
0.10 ml	3	10	± 1.25	± 5.0	≤ 2.0	≤ 4.0
0.20 ml	6	20	± 0.10	± 2.0	≤ 0.6	≤ 1.8
0.50 ml	15	50	± 0.50	± 1.3	≤ 0.2	≤ 0.7
1.00 ml	30	100	± 0.10	± 0.5	≤ 0.3	≤ 0.5
1.25 ml	37.5	125	± 0.40	± 0.4	≤ 0.6	≤ 0.5
2.50 ml	75	250	± 0.50	± 0.4	≤ 0.2	≤ 0.3
5.00 ml	150	500	± 0.40	± 0.3	≤ 0.2	≤ 0.3
10.00 ml	300	1000	± 0.70	± 0.6	≤ 0.2	≤ 0.3
12.50 ml	375	1250	± 0.20	± 0.3	≤ 0.2	≤ 0.3
25.00 ml	750	2500	± 0,70	± 0.5	≤ 0.7	≤ 0.6
50.00 ml	1500	5000	± 0.20	± 0.5	≤ 0.6	≤ 0.8

The data for Ritips® 0.05 ml are based on a measurement with a 10 μl pipette tip.

Measurement according to DIN EN ISO 8655 with Ripette® pro.

Liquid: double-distilled water
Reference temperature: approx. 20 °C

The Ripettes® are suitable for use at a temperature range from + 15 °C to + 40 °C.

Subject to technical modifications.