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    "title": "Insulin Syringe Sizes and Gauges Explained",
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    "faq": [
        {
            "q": "What does U-100 mean on an insulin syringe?",
            "a": "U-100 means the scale is calibrated for 100 units per milliliter. Every marked unit on a U-100 barrel equals 0.01 mL, so 10 units = 0.1 mL and 100 units = 1 mL."
        },
        {
            "q": "What is the difference between a 0.3 mL and a 1 mL insulin syringe?",
            "a": "A 0.3 mL barrel holds up to 30 U-100 units and has widely spaced markings (often 0.5-unit steps), making small volumes easier to read. A 1 mL barrel holds 100 units but uses 2-unit graduation steps, so lines are more tightly packed."
        },
        {
            "q": "How does needle gauge affect syringe selection for laboratory use?",
            "a": "Gauge indicates outer needle diameter on an inverse scale—higher gauge numbers mean thinner needles. Common insulin syringe gauges range from 28 to 31 G, with 31 G being among the thinnest available."
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