Abstract: A method including one or more steps of a procedure for preparing a microscopic sample for a high-pressure freezing process is provided, wherein the sample is provided using an arrangement comprising a middle plate of a high-pressure freezing cartridge and an incubation chamber, wherein the middle plate is attached to a lower surface of a bottom of the incubation chamber by an adhesive and detachable from the incubation chamber by effecting a relative movement between the middle plate and the incubation chamber, wherein the sample is provided on an enclosing element which is fitted into an opening of the middle plate, and wherein, when the sample is to be subjected to the high-pressure freezing process, the relative movement between the middle plate and the incubation chamber is effected, thereby detaching the middle plate with the sample from the incubation chamber. Means to implement the method are also part of the present disclosure.

Abstract: A method for contacting gases and liquid droplets for mass and/or heat transfer and a spray tower are disclosed, in which liquid is injected at a number of levels in counterflow to the gas, the gas being fed through at least two inlet openings in the shell of the spray tower. In this case, in order to reduce the differences in the contact duration, the flow direction of the gas at the inlet openings points into the internal region of the spray tower, which has a diameter of greater than or equal to 12 m, in particular greater than 20 m, such that the flow directions of the at least two gas streams intersect on their extension inside the spray tower, in particular at the center of the spray tower at up to half the spray tower radius downstream of the center of the spray tower.

Abstract: A method for contacting gases and liquid droplets for mass and/or heat transfer and a spray tower are disclosed, in which liquid is injected at a number of levels in counterflow to the gas, the gas being fed through at least two inlet openings in the shell of the spray tower. In this case, in order to reduce the differences in the contact duration, the flow direction of the gas at the inlet openings points into the internal region of the spray tower, which has a diameter of greater than or equal to 12 m, in particular greater than 20 m, such that the flow directions of the at least two gas streams intersect on their extension inside the spray tower, in particular at the center of the spray tower at up to half the spray tower radius downstream of the center of the spray tower.