Looking for a cost-effective filter for fluorscence

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Cost-effective optical filters for fluorescence around 530nm with over 90% transmission are challenging to find under $100. Suggestions include exploring high and low pass filters in series as a potential solution. Users recommend checking various suppliers and considering custom options for better pricing. The discussion emphasizes the need for effective filtering without exceeding budget constraints. Finding the right filter is crucial for optimal fluorescence results.
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I'm having trouble finding cheap (<$100) and effective (90%+ transmission) optical filters for fluorescence, specifically band-passing around 530nm, as narrowly as possible .

Anyone have any suggestions?
 
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Have you priced up using a high and low pass filter in series? I know nothing about optical filters but could be worth a look
 

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