The amount of liquid's a mute point if you've got an ec meter-vital with pm as despite numerous requests they haven't published even the roughest ml per litre guide.
it's on the bottle.
i was an absolute coco novice when i first used PMs nutes and had no problems what so ever growing without an EC meter. i started at about 2-2.5ml/L then gradually worked it up until the plants were happy. easy.