Precision Hydration electrolyte drink mix packets contain no artificial ingredients and come in three strengths so you can match your sodium intake to how you sweat. Each pack has 8 serves; dissolve one packet in 500ml of water.

Choose your strength

• PH 500: moderate strength, for lighter sweaters, cooler conditions and shorter sessions
• PH 1000: strong, the all-rounder for moderate to heavy sweaters and warmer conditions
• PH 1500: very strong, for heavy or salty sweaters, hot and humid events, and starting hydrated before big days

When to use it

• Hot-weather training, long runs and rides where you lose a lot of sodium in sweat
• The day before and morning of a key event, to start well hydrated
• During sessions where you're getting carbohydrate from gels or chews and need electrolytes separately

Not sure which strength?

Precision offers a free online sweat test and personalised hydration plan at precisionhydration.com. As a rough guide, the heavier or saltier your sweat (white salt marks on kit, stinging eyes, cramping), the higher the strength you're likely to need.

Good to know

Packets suit people who want a bigger batch of electrolyte drink, while tablets and capsules are easier to carry on the move.