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    "title": "U-100 vs U-40 Syringes: What the Numbers Mean",
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    "tldr": "U-100 syringes come in 0.3, 0.5, and 1 mL sizes — not all hold 1 mL. Here's how U-100 and U-40 unit scales differ, unit by unit, with a free conversion table.",
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            "value": "U-100 syringes come in 0.3, 0.5, and 1 mL sizes — not all hold 1 mL. Here's how U-100 and U-40 unit scales differ, unit by unit, with a free conversion table.",
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    "faq": [
        {
            "q": "What does U-100 mean on a syringe?",
            "a": "U-100 means the barrel's printed scale divides 1 mL into 100 equal unit marks, so each mark equals 0.01 mL. It describes the scale's concentration reference, not the syringe's physical size or needle length."
        },
        {
            "q": "What is the difference between U-100 and U-40 syringes?",
            "a": "U-100 has 100 unit marks per mL (1 unit = 0.01 mL); U-40 has 40 marks per mL (1 unit = 0.025 mL). The scales differ by a factor of 2.5. The syringe scale must match the solution being measured to avoid a 2.5× reading error."
        },
        {
            "q": "How do you convert U-100 unit marks to milliliters?",
            "a": "Divide the unit number by 100. Example: 25 units on a U-100 syringe equals 0.25 mL (25 ÷ 100). For U-40, divide by 40: 10 units equals 0.25 mL (10 ÷ 40). Both follow directly from the units-per-mL definition of each scale."
        }
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            "description": "U-100 syringes come in 0.3, 0.5, and 1 mL sizes — not all hold 1 mL. Here's how U-100 and U-40 unit scales differ, unit by unit, with a free conversion table."
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                        "text": "U-100 means the barrel's printed scale divides 1 mL into 100 equal unit marks, so each mark equals 0.01 mL. It describes the scale's concentration reference, not the syringe's physical size or needle length."
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                        "text": "U-100 has 100 unit marks per mL (1 unit = 0.01 mL); U-40 has 40 marks per mL (1 unit = 0.025 mL). The scales differ by a factor of 2.5. The syringe scale must match the solution being measured to avoid a 2.5× reading error."
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                        "text": "Divide the unit number by 100. Example: 25 units on a U-100 syringe equals 0.25 mL (25 ÷ 100). For U-40, divide by 40: 10 units equals 0.25 mL (10 ÷ 40). Both follow directly from the units-per-mL definition of each scale."
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