Spectra Breast Pumps: S1 vs S2 vs 9 Plus (Specs & Use)
Choosing between Spectra S1, S2, and 9 Plus? Below you’ll find clear, measurable specs (mmHg, CPM), how the modes work, battery vs plug-in differences, flange sizing in millimeters, step-by-step setup, and CDC-based milk-storage guidance—so you can buy and pump with confidence.
Quick compare: S1 vs S2 vs 9 Plus
| Model | Max suction | System | Weight | Power | Good for |
|---|---|---|---|---|---|
| Spectra S1 Plus | 270 mmHg (L01–L12) | Closed | ~3 lb | Rechargeable battery | Daily double-pumping with mobility; night sessions |
| Spectra S2 Plus | 270 mmHg (L01–L12) | Closed | ~3 lb | AC plug-in | Home/desk use; budget-friendly vs S1 |
| Spectra 9 Plus | 260 mmHg (up to L10) | Closed | ~0.5 lb | Rechargeable battery | Portability & quick sessions; backup/travel |
Specs from Spectra: S1/S2 up to 270 mmHg; 9 Plus up to 260 mmHg; 9 Plus ~0.5 lb portable design. :contentReference[oaicite:0]{index=0}
Modes & cycles (how Spectra works)
Spectra pumps use two modes. Massage is a fast, shallow pattern to trigger let-down; Expression is slower and stronger to efficiently remove milk. On S1/S2, Massage is locked at ~70 CPM, while Expression is adjustable ~38–54 CPM. Suction (vacuum) is adjusted separately (L01–L12). :contentReference[oaicite:1]{index=1}
- Start gentle: Begin in Massage at a comfortable vacuum.
- Switch on flow: When milk lets down, switch to Expression and fine-tune cycles/suction.
- Comfort first: Use the lowest effective level that moves milk well.
Battery vs plug-in: what changes
S1 Plus includes a built-in rechargeable battery (great for mobility). S2 Plus uses AC power. 9 Plus is an ultra-portable, battery-powered unit (~0.5 lb) ideal for quick on-the-go sessions. Performance relates more to fit/settings than simply “more power.” :contentReference[oaicite:2]{index=2}
Flange sizing (mm): fit = output
Measure nipple diameter in millimeters (exclude areola) and pick the closest flange size. Good fit reduces friction and may improve output. If you feel pinching/rubbing or see blanching, try one size up/down or consult an IBCLC.
Setup & session tips (step-by-step)
- Assemble & align: Seat parts firmly; center the nipple in the flange.
- Massage mode: Start at a comfortable vacuum to stimulate let-down (~70 CPM on S1/S2). :contentReference[oaicite:3]{index=3}
- Expression mode: Once flowing, switch to Expression (adjust ~38–54 CPM on S1/S2) and raise vacuum only as needed. :contentReference[oaicite:4]{index=4}
- Hands-on pumping: Gentle compressions can help emptying; relax and hydrate.
- Duration: Typical double sessions: 15–20 minutes; stop when comfortably empty.
- Between sessions (comfort): For surface soreness, some parents use silver nursing cups between feeds—remove before nursing or pumping.
Cleaning & safe milk storage
- Parts care: Wash milk-contact parts with hot, soapy water after each use; air-dry on a clean rack. Sanitize per brand instructions.
- Fresh milk storage: Room ≤77°F (25°C) up to 4 hours · Refrigerator up to 4 days · Freezer ~6 months best (≤12 months acceptable). :contentReference[oaicite:5]{index=5}
- Thawed milk: If thawed in the fridge, use within 24 hours; never refreeze; avoid microwaving. :contentReference[oaicite:6]{index=6}
FAQ
Is “hospital-grade” an official standard?
No. The FDA does not recognize the term “hospital-grade.” Compare measurable specs instead: closed system, maximum suction (mmHg), noise (dB), and intended use. :contentReference[oaicite:7]{index=7}
How loud are Spectra pumps?
They’re designed for a quiet “soft hum.” Actual noise varies by setting and surface; prioritize comfort and fit for best results.
Can I control cycles and suction separately?
On S1/S2 you can adjust both; Massage is locked at ~70 CPM, Expression is ~38–54 CPM adjustable, and vacuum is L01–L12. :contentReference[oaicite:8]{index=8}
Which model is best for work?
S1 (battery) is flexible for commutes; S2 (AC) suits desk setups; 9 Plus is ultra-portable for short/mobile sessions. :contentReference[oaicite:9]{index=9}