VEE GEE 6603DS-1S is the compact short-form dual-scale borosilicate glass hydrometer reading both Specific Gravity (1.000 to 1.225) and Baumé Heavy (0° to 26°) on the same stem, 165 mm overall length. It covers the same measurement range as the full-size 6603DS-1 (305 mm) but in a compact format suited to smaller sample containers, field use, or bench-space-limited labs. Calibrated at 15°C (60°F). Subdivisions: 0.005 SG / 1° Baumé. Autoclavable.
Features & Benefits
- 165 mm Compact Format — Same Range as 6603DS-1: At 165 mm (6.5 in), the 6603DS-1S fits in smaller hydrometer cylinders and graduated cylinders where the full 305 mm instrument would not. It covers SG 1.000–1.225 / 0–26° Baumé Heavy — slightly wider than the 6603DS-1 (to SG 1.220) due to the compressed scale on the shorter stem.
- Dual Scale — Specific Gravity and Baumé Heavy: Read both SG and Baumé Heavy simultaneously — no conversion tables required. Covers dilute brines, sugar solutions, weak acids, and other aqueous solutions with specific gravities at or above water.
- Subdivisions: 0.005 SG / 1° Baumé: Practical resolution for process and QC measurement in routine laboratory and industrial applications.
- Calibrated at 15°C (60°F): Factory-calibrated at the standard reference temperature for density and specific gravity measurement, consistent with ASTM and international standards.
- Borosilicate Glass Construction: Chemically resistant; transparent for clear meniscus reading; autoclavable at 121°C.
- Made in USA: VEE GEE Scientific hydrometer manufactured to USA quality standards.
- 1-Year Warranty: Backed by VEE GEE Scientific's standard instrument warranty.
Specifications
| Property | Value |
|---|---|
| SKU | 6603DS-1S |
| Measuring Scales | Specific Gravity and Baumé Heavy |
| Specific Gravity Range | 1.000 to 1.225 |
| Baumé Range | 0° to 26° Bé (Heavy scale) |
| Subdivisions | 0.005 SG / 1° Baumé |
| Overall Length | 165 mm (6.5 in) |
| Calibration Temperature | 15°C (60°F) |
| Construction | Borosilicate Glass |
| Color | Clear |
| Autoclavable | Yes |
| Quantity | 1 Each |
| Country of Origin | United States |
| Brand | VEE GEE Scientific |
| Warranty | 1 Year |
6603DS-1S vs. 6603DS-1: Short-Form vs. Full-Length
| SKU | SG Range | Baumé | Length | Best Use |
|---|---|---|---|---|
| 6603DS-1S (this item) | 1.000–1.225 | 0–26° Heavy | 165 mm | Small cylinders, field use, limited bench space |
| 6603DS-1 | 1.000–1.220 | 0–26° Heavy | 305 mm | Standard lab hydrometer cylinder, easier reading |
6603DS Series — Complete Dual-Scale SG/Baumé Hydrometer Selection
| SKU | SG Range | Baumé Range | Length | Best For |
|---|---|---|---|---|
| 6603DS-13 | 0.600–1.000 | 10–100° Bé Light | 305 mm | Solvents, oils, liquids lighter than water |
| 6603DS-1 | 1.000–1.220 | 0–26° Bé Heavy | 305 mm | Dilute brines, sugar solutions, weak acids |
| 6603DS-1S (this item) | 1.000–1.225 | 0–26° Bé Heavy | 165 mm | Same range, compact short-form |
| 6603DS-2 | 1.200–1.420 | 24–42° Bé Heavy | 305 mm | Concentrated brines, phosphoric acid |
| 6603DS-2S | 1.200–1.425 | 24–42° Bé Heavy | 165 mm | Same range, compact short-form |
| 6603DS-3 | 1.400–1.620 | 42–55° Bé Heavy | 305 mm | Concentrated sulfuric/nitric acid |
| 6603DS-4 | 1.600–1.820 | 55–65° Bé Heavy | 305 mm | High-density acids and electrolytes |
| 6603DS-5 | 1.800–2.020 | 64–72° Bé Heavy | 305 mm | Fuming sulfuric acid, dense solutions |
| 6603DS-7 | 1.000–2.000 | 0–72° Bé Heavy | 305 mm | Wide-range screening across all densities |
Frequently Asked Questions
Is the 6603DS-1S less accurate than the 6603DS-1 because it is shorter?
The short-form format compresses the scale over a shorter stem length, which slightly reduces the spacing between graduation marks compared to the full-size 305 mm instrument. For most routine QC and process-control applications the 0.005 SG / 1° Baumé subdivisions are adequate. For applications requiring the highest read accuracy at a single point in the range, the full-length 6603DS-1 is generally preferred due to wider graduation spacing. Both instruments are calibrated at 15°C (60°F) to the same standard.
Why does the 6603DS-1S go to SG 1.225 while the 6603DS-1 only goes to SG 1.220?
The slightly extended upper SG range (1.225 vs. 1.220) in the short-form is common with compressed-scale hydrometers — fitting the same physical measurement range onto a shorter stem naturally shifts the endpoint slightly. The difference is 5 SG units (0.005) and is not operationally significant for most applications.
Ordering
Authorized dealer, ships from USA inventory. Serving academic, government, and research laboratories nationwide.