BIS Information and Certifications

Heat & Cold Retention Capability

Tested as per IS 17526 : 2021
Product Image Product Code & Capacity Type of Flask Heat Retention Capability (IS 17526 : 2021) Cold Retention Capability (IS 17526 : 2021)
1 hr 6 hrs 12 hrs 24 hrs 1 hr 6 hrs 12 hrs 24 hrs
K-CLASS PRO K-CLASS PRO 1000 (1000ml) Narrow Mouth 91 80 70 55 7 10 14 18
K-CLASS PRO 750 (750ml) Narrow Mouth 91 78 60 50 7 10 14 19
K-CLASS PRO 350 (350ml) / K-CLASS PRO 500 (500ml) Narrow Mouth 88 70 56 42 8 11 16 20
K-FLIP & K-DUAL CUP K-FLIP & K-DUAL CUP 1000 (1000ml) Wide Mouth 88 70 56 42 8 11 15 20
K-FLIP & K-DUAL CUP 750 (750ml) Wide Mouth 80 60 50 40 8 11 15 21
K-FLIP & K-DUAL CUP 350 (350ml) / K-FLIP & K-DUAL CUP 500 (500ml) Wide Mouth 80 60 50 40 9 12 17 23
K-SLIM K-SLIM 600 (580ml) Wide Mouth 80 60 50 40 8 11 15 21
K-SLIM 500 (480ml) Wide Mouth 80 60 50 40 9 12 17 23
K-SLIM 300 (280ml) Narrow Mouth 88 70 56 42 8 11 16 20
K-SLIM 200 (180ml) Narrow Mouth 80 60 50 40 8 13 18 23
Heat: Tested at 95°C Cold: Tested at 5°C
K-CLASS PRO
IS 17526 : 2021

K-CLASS PRO

3 Capacities • Narrow Mouth
K-CLASS PRO 1000 1000ml
Narrow Mouth
Retention 1 hr 6 hrs 12 hrs 24 hrs
Heat 91 80 70 55
Cold 7 10 14 18
K-CLASS PRO 750 750ml
Narrow Mouth
Retention 1 hr 6 hrs 12 hrs 24 hrs
Heat 91 78 60 50
Cold 7 10 14 19
K-CLASS PRO 350 / 500 350ml / 500ml
Narrow Mouth
Retention 1 hr 6 hrs 12 hrs 24 hrs
Heat 88 70 56 42
Cold 8 11 16 20
K-FLIP & K-DUAL CUP
IS 17526 : 2021

K-FLIP & K-DUAL CUP

3 Capacities • Wide Mouth
K-FLIP & DUAL CUP 1000 1000ml
Wide Mouth
Retention 1 hr 6 hrs 12 hrs 24 hrs
Heat 88 70 56 42
Cold 8 11 15 20
K-FLIP & DUAL CUP 750 750ml
Wide Mouth
Retention 1 hr 6 hrs 12 hrs 24 hrs
Heat 80 60 50 40
Cold 8 11 15 21
K-FLIP & DUAL CUP 350 / 500 350ml / 500ml
Wide Mouth
Retention 1 hr 6 hrs 12 hrs 24 hrs
Heat 80 60 50 40
Cold 9 12 17 23
K-SLIM
IS 17526 : 2021

K-SLIM

4 Capacities • Wide & Narrow Mouth
K-SLIM 600 580ml
Wide Mouth
Retention 1 hr 6 hrs 12 hrs 24 hrs
Heat 80 60 50 40
Cold 8 11 15 21
K-SLIM 500 480ml
Wide Mouth
Retention 1 hr 6 hrs 12 hrs 24 hrs
Heat 80 60 50 40
Cold 9 12 17 23
K-SLIM 300 280ml
Narrow Mouth
Retention 1 hr 6 hrs 12 hrs 24 hrs
Heat 88 70 56 42
Cold 8 11 16 20
K-SLIM 200 180ml
Narrow Mouth
Retention 1 hr 6 hrs 12 hrs 24 hrs
Heat 80 60 50 40
Cold 8 13 18 23
BIS Test Conditions (IS 17526)
  • Hot retention values are measured using water initially filled at 95°C (+1°C / −0°C).
  • Cold retention values are measured using water initially filled at 5°C.
Note

Temperature-retention values are tested as per IS 17526:2021 under prescribed conditions, with the filled bottle remaining closed for the stated duration. Actual performance may vary depending on fill level, initial and ambient temperature, and the frequency and duration of opening.

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