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    "title": "Best Reusable Pens for Research Reconstitution: The Gansulin Metal Pen",
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    "tldr": "The Gansulin metal click-dial pen accepts standard 3 ml cartridges and dials 1-60 units in single-unit clicks via a spring-driven mechanism. Research use only.",
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            "source": "Lab article (https://www.preppinpeppers.com/blogs/the-lab/best-reusable-research-peptide-pen-gansulin)",
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            "source": "Lab article (https://www.preppinpeppers.com/blogs/the-lab/best-reusable-research-peptide-pen-gansulin)",
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            "value": "What it is",
            "source": "Lab article (https://www.preppinpeppers.com/blogs/the-lab/best-reusable-research-peptide-pen-gansulin)",
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            "value": "Why a reusable metal pen for the bench",
            "source": "Lab article (https://www.preppinpeppers.com/blogs/the-lab/best-reusable-research-peptide-pen-gansulin)",
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            "value": "What to look for in a research pen",
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            "value": "V1 vs V2 vs V3: Full Specs Compared",
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            "value": "Bohannon, Postgrad Med 1999: Insulin delivery using pen devices. Simple-to-use tools may help young and old alike - pubmed.ncbi.nlm.nih.gov",
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            "q": "What cartridges does the Gansulin metal reusable pen use?",
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