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    IB textbooks for sale

    We have recently changed from IB to A - Levels and have some textbooks that are still current to sell. They are all Oxford IB Diploma Programme 2014 edition in good condition (for quick ref see attachment for ISBN and sample photo of the books) We are based in Gravesend, Kent. Obviously these...
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    Why is my technical agar not clear?

    What am I doing wrong? My agar is very cloudy and never clear. I am making up as per cleapss instructions but HoD says it should be clear. What am I doing wrong?