is folded over on itself as shown in fig2 4 and inserted into a refrigerant receiver such as 65 fig1 with the yoke 77 located at the bottom of the receiver edges 85 will provide a camming action to facilitate entry of the container 75 into the receiver in this respect it can be seen from fig5 and 7 that edges 85 will provide the same function as edges 16 and 18 of container 10 so as to facilitate the entry of the container into the refrigerant receiver in addition the cutaways 86 and 87 defined by edges 85 80 85 and 85 78 85 respectively will tend to prevent obscuring of an oil bleed hole at the lowermost portion of conduit 66 in fig1 at this point it will be noted that the outer ends of containers 76 are chamfered or trimmed diagonally at 16 34 and 18 34 in the same manner as edges 16 and 18 of fig1 and 16 39 and 18 39 of fig1 this construction facilitates the camming of the container 75 into a refrigerant receiver as can be visualized from fig5 when the container 75 is inserted in an upright position in fig1 a further modified adsorbent unit 90 is disclosed which may be identical in all respects to the embodiment disclosed in fig9 14 except for the following differences first of all the plastic pocket members 53 39 which are analogous to pocket members 53.