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titration end point help

hi, I'm doing a chemistry project where I'm titrating orange juice samples against an iodine solution. currently I'm doing 20ml of juice + 150ml water and 1ml starch and other stuff for the orange juice sample. I've already had to dilute my standard solution by a factor of 4 because the titre was too small. when I carried out the titration again, the end point was very hard to see as the orange solution gradually changed to a brown colour. I've come up with 2 ideas so far on what to do: use 10ml pf orange juice instead of 20ml or use 5ml of starch indicator instead of 1ml. which one would be best to see a clearer colour change?

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