Low 260/230 ration in DNA isolated

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M Bedanta
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Low 260/230 ration in DNA isolated

 Hello,
we have isolated DNA using HiPura Mammalian Genomic DNA purification kit. The 260/280 ratio was 1.73 , which I guess is good for DNA. But the 260/230 ratio was 1.62. What might be the possible cause?