Cleaning liquid, set, ink-jet recording apparatus and cleaning method

A cleaning liquid usable for cleaning of an ink-jet recording apparatus, the cleaning liquid comprising:

• a nonionic surfactant, solubility of the nonionic surfactant in water at 20° C. being less than 0.2% by mass;
• a first water-soluble organic solvent of which solubility parameter is not less than 13;
• a second water-soluble organic solvent of which solubility parameter is less than 12;
• and
• water,
• wherein the cleaning liquid satisfies the following conditions (1) to (4):
• X≥0.1 Condition (1):
• A−B≥0 Condition (2):
• B/X≥15 Condition (3):
• 10≤A+B≤60 Condition (4):
• in the conditions (1) to (4),
• X:
• a content amount (% by mass) of the nonionic surfactant in an entire amount of the cleaning liquid,
• A:
• a content amount (% by mass) of the first water-soluble organic solvent in the entire amount of the cleaning liquid, and
• B:
• a content amount (% by mass) of the second water-soluble organic solvent in the entire amount of the cleaning liquid,
• wherein the first water-soluble organic solvent includes at least one selected from the group consisting of:
• glycerol, diethylene glycol and propylene glycol, and
• wherein the second water-soluble organic solvent includes at least one selected from the group consisting of:
• tripropylene glycol, 1,2-hexanediol, triethylene glycol-n-butyl ether and tripropylene glycol-n-butyl ether.