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    "title": "How a precision click-dial pen works: reading the unit counter window and the click",
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    "tldr": "How a click-dial pen works: the dial knob, the unit counter window, one click per unit (0.01 ml on the U-100 scale), the end-of-travel stop and dial-back.",
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            "attribute": "section",
            "value": "What it is",
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            "value": "The dial knob and window",
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            "value": "The click you can hear and feel",
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            "value": "The end-of-travel stop",
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            "value": "Dialing back without waste",
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            "value": "Sparre et al., J Diabetes Sci Technol 2023: Factors Affecting Performance of Insulin Pen Injector Technology: A Narrative Review - pmc.ncbi.nlm.nih.gov",
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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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            "value": "Jonker et al., Int J Clin Pharmacol Ther 2021: First pre-filled pen device with highly purified human menopausal gonadotropin (HP-hMG, Menopur) in liquid is shown to be bioequivalent to powder for reconstitution - pmc.ncbi.nlm.nih.gov",
            "source": "Lab article (https://www.preppinpeppers.com/blogs/the-lab/how-a-precision-click-dial-peptide-pen-works)",
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            "q": "How does the click mechanism work on a precision click-dial pen?",
            "a": "A spring-loaded pin engages successive grooves in the mechanism—one groove per unit—producing a firm tactile bump and audible click each time one unit is added or removed, letting you count by touch without viewing the window."
        },
        {
            "q": "What does one unit equal in milliliters on a U-100 pen?",
            "a": "On the standard U-100 scale, one unit equals 0.01 ml, so 10 units equals 0.10 ml. The unit counter window on pens like the Gansulin all-metal pen displays settings from 1 to 60 units."
        },
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            "q": "How do you correct an over-dialed setting on a reusable pen without wasting liquid?",
            "a": "Simply turn the dial knob back down. On a well-made pen, dialing down does not expel liquid from the cartridge, so no volume is lost during the correction. The Gansulin pen dials back to a 1-unit minimum."
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