Abstract: A field apparatus (also referred to as a “biosampler”) is configured to automatically capture multiple samples of an aqueous medium (for example, water from a lake) and process same to preserve unstable analytes in the field. In this way, a set of samples from the aqueous medium can, for example, be captured at multiple points in time, processed with a biopreservative to preserve unstable analytes (for example, RNA) and then later collected for further analysis. Alternatively, multiple samples of the aqueous medium can be collected and preserved at one moment.

Abstract: A field apparatus (also referred to as a “biosampler”) is configured to automatically capture multiple samples of an aqueous medium (for example, water from a lake) and process same to preserve unstable analytes in the field. In this way, a set of samples from the aqueous medium can, for example, be captured at multiple points in time, processed with a biopreservative to preserve unstable analytes (for example, RNA) and then later collected for further analysis. Alternatively, multiple samples of the aqueous medium can be collected and preserved at one moment.

Abstract: Dispenser with a liquid storage unit, a dispensing head with a perforated plate component which has at least 25 dispensing openings in a dispensing opening region, with a pre-chamber connected upstream of the dispensing openings of the perforated plate component and from which the dispensing openings are supplied, and a connecting channel which connects the liquid storage unit to the pre-chamber. The perforated plate component is fastened on the dispensing head in an edge region and the dispensing opening region is pressed into a curved form by means of a curvature body which is arranged in the pre-chamber and acts with force upon the perforated plate.

Abstract: Dispenser for the delivery of liquid media, having a base unit and a delivery head with a delivery opening. The delivery head includes a first portion which includes a fastening device by means of which the first portion is fastened or fixed in position with respect to a media storage unit on the base unit, and which includes the delivery opening. The delivery head includes a second portion realized so as to be movable in relation to the first portion and includes an actuating handle which is operatively coupled with the coupling piece such that a displacement of the actuating handle in relation to the first portion leads to a displacement of the coupling piece in relation to the first part portion.

Abstract: Dispenser for the delivery of liquid media, having a base unit and a delivery head with a delivery opening. The delivery head includes a first portion which includes a fastening device by means of which the first portion is fastened or fixed in position with respect to a media storage unit on the base unit, and which includes the delivery opening. The delivery head includes a second portion realized so as to be movable in relation to the first portion and includes an actuating handle which is operatively coupled with the coupling piece such that a displacement of the actuating handle in relation to the first portion leads to a displacement of the coupling piece in relation to the first part portion.

Abstract: Dispenser with a liquid storage unit, a dispensing head with a perforated plate component which has at least 25 dispensing openings in a dispensing opening region, with a pre-chamber connected upstream of the dispensing openings of the perforated plate component and from which the dispensing openings are supplied, and a connecting channel which connects the liquid storage unit to the pre-chamber. The perforated plate component is fastened on the dispensing head in an edge region and the dispensing opening region is pressed into a curved form by means of a curvature body which is arranged in the pre-chamber and acts with force upon the perforated plate.