Moldex 6846 Mellows PlugStation Review: 250-Pair Earplug Dispenser (NRR 30)
Moldex 6846 Mellows PlugStation Review: Ultra-Soft NRR 30 Earplugs for Workers Who Cannot Wear Standard Foam All Day
Every hearing conservation program has a subset of workers who report that standard earplugs cause too much ear pressure to wear consistently through a full shift. These workers are frequently the compliance gap in an otherwise well-run program — they insert at shift start, remove by midshift from discomfort, and are without protection for several hours per day. The Moldex 6846 Check Price on Amazon → Mellows PlugStation addresses this directly: 250 pairs of Mellows earplugs, Moldex's ultra-low-pressure foam design engineered for maximum comfort in extended wear, dispensed from a wall-mount individual-pair dispenser. The trade-off is an NRR of 30 rather than 33 — and for the environments where Mellows are appropriate, that trade-off is explicitly worthwhile.
OSHA 29 CFR 1910.95 comfort provision: OSHA requires that when a worker indicates that a hearing protector is causing discomfort, the employer must offer an alternative from a variety of suitable protectors. The Mellows at NRR 30 remains a suitable protector for environments below approximately 101 dB (using NRR÷2 to stay below 85 dB effective exposure) while dramatically improving wearer comfort.
What Are Mellows Earplugs?
Mellows are Moldex's lowest-pressure foam earplug. The earplug body is cylindrical and slightly larger in diameter than many standard foam plugs. The foam formulation is designed to expand with the gentlest possible outward force after insertion — the "mellow" name reflects this intentionally soft feel. Workers who describe standard earplugs as "too tight," "painful after two hours," or "makes my ears ache" are typically responding to the expansion pressure of high-recovery foam. Mellows' ultra-low pressure eliminates that sensation.
The trade-off is NRR. Mellows achieve NRR 30, compared to NRR 33 for Pura-Fit (Moldex 6844 PlugStation), Goin' Green (Moldex 6646 PlugStation), and SparkPlugs (Moldex 6605 PlugStation). Under NIOSH's NRR÷2 derating, this means approximately 15 dB of real-world attenuation vs. 16.5 dB for NRR 33 models. In many industrial environments, this 1.5 dB difference is insignificant from a compliance standpoint — but it must be calculated against actual noise exposure levels before deploying Mellows as a sole hearing protector.
Specifications
| Specification | Detail |
|---|---|
| SKU | 6846 (PlugStation, 250-pair) |
| Earplug model | Mellows |
| NRR | 30 dB |
| Real-world attenuation (NRR÷2) | ~15 dB |
| Style | Cylindrical ultra-soft foam |
| Color | Light blue/purple |
| Corded | No |
| Dispenser capacity | 250 pairs |
| Wall-mount bracket | Included |
| Latex-free | Yes |
| NIOSH listed | Yes |
The NRR 30 vs. NRR 33 Decision: When Does It Matter?
This is the central question for any safety manager considering Mellows. The answer depends on your facility's actual noise exposure levels and the compliance rate you can realistically achieve with each earplug type.
| Noise Level | Mellows NRR 30 (NRR÷2, effective ~15 dB off) | Pura-Fit NRR 33 (NRR÷2, effective ~16.5 dB off) | OSHA Limit |
|---|---|---|---|
| 85 dB | 70 dB effective | 68.5 dB effective | 85 dB TWA — both compliant |
| 90 dB | 75 dB effective | 73.5 dB effective | Both compliant |
| 95 dB | 80 dB effective | 78.5 dB effective | Both compliant |
| 100 dB | 85 dB effective | 83.5 dB effective | Mellows borderline — audit required |
| 105 dB | 90 dB effective | 88.5 dB effective | Mellows insufficient — upgrade required |
Key insight: In facilities where noise exposure is reliably below 100 dB TWA, Mellows at NRR 30 delivers effective protection within OSHA limits. In environments approaching or exceeding 100 dB, choose NRR 33 models or add earmuffs. The compliance value of Mellows comes from workers who will actually wear them for a full shift vs. workers who remove NRR 33 plugs by midshift — a worn NRR 30 earplug outperforms a removed NRR 33 earplug every time.
For NIOSH guidance on acceptable attenuation levels, see our NIOSH standards guide.
Who Should Use Mellows?
- Workers with narrow ear canals: Smaller canal diameter increases the pressure experienced from expanding foam. Mellows' ultra-soft expansion is particularly comfortable for workers who have always struggled with standard foam plugs.
- Hearing aid users during breaks: Workers who wear hearing aids during non-noise periods may have already-sensitive ear canals from continuous device wear. Mellows' gentle pressure reduces the transition discomfort when switching from aid to earplug.
- Extended-wear 10–12 hour shifts: Facilities running extended shifts in noise-hazard areas find Mellows compliance rates substantially higher than NRR 33 foam after the 8-hour mark.
- Workers who have repeatedly rejected other foam earplugs: If a worker has tried multiple foam earplug types and reports discomfort with all of them, Mellows is the logical next step before escalating to multi-flange or canal cap alternatives.
- Post-surgical or post-infection ear canal sensitivity: Temporary sensitivity following ear surgery or infections may make any standard foam earplug uncomfortable during recovery. Mellows minimizes this discomfort while maintaining hearing protection.
Mellows vs. Other PlugStation Formats
| Model | NRR | Expansion Pressure | Style | Best For |
|---|---|---|---|---|
| Mellows 6846 | 30 | Ultra-low | Foam | Ear-sensitive, extended wear |
| Pura-Fit 6844 | 33 | Medium | Smooth-skin foam | Allergy-prone, comfort-focused |
| Goin' Green 6646 | 33 | Low-medium | PVC-free foam | Sustainability programs |
| SparkPlugs 6605 | 33 | N/A (flange) | Multi-flange | Visibility compliance |
| Meteors 6875 | 33 | N/A (flange) | Multi-flange, mushroom | Gloved insertion |
How to Refill the Moldex 6846 PlugStation
- Press both front-panel release tabs simultaneously and open the dispenser door.
- Remove any remaining Mellows pairs from the magazine channel.
- Load Mellows uncorded refill pairs vertically into the channel. The Mellows' slightly larger diameter means the channel is matched specifically to this earplug — do not attempt to load other models.
- Close the panel until both tabs engage.
- Test-dispense one pair to confirm smooth operation.
- Document the refill date and pair count in your hearing conservation program records.
PlugStation vs. EcoStation vs. Bulk Box
| Feature | 6846 PlugStation | EcoStation (bulk hopper) | Bulk Box |
|---|---|---|---|
| Dispense | Individual pairs | Bulk hopper | Open box |
| Hygiene | High | Medium | Low |
| Capacity per refill | 250 pairs | 250–500+ pairs | As stocked |
| Accountability | High | Low | None |
| Best for | Secondary stations, comfort-priority | High-volume primary lines | Storeroom |
If your facility needs larger-volume dispensing, see the Moldex 6847 Mellows PlugStation (500-pair). For bulk EcoStation alternatives, see the Moldex 6702 Softies EcoStation and Moldex 6708 Meteors EcoStation.
Frequently Asked Questions
What is the NRR of the Mellows earplugs in the 6846 PlugStation?
NRR 30. This is intentionally lower than the NRR 33 of other Moldex foam earplugs. The design trade-off is: lower expansion pressure (maximum comfort) at the cost of 1.5 dB less real-world attenuation compared to NRR 33 models.
Is NRR 30 sufficient for OSHA compliance?
It depends on your facility's noise exposure levels. Using NIOSH NRR÷2 derating, Mellows provide approximately 15 dB of real-world attenuation. For noise levels up to approximately 100 dB TWA, Mellows keep effective exposure below the 85 dB action level. For noise levels above 100 dB, choose NRR 33 earplugs or use double protection.
Why would I choose NRR 30 over NRR 33?
A worn NRR 30 earplug provides far more protection than an NRR 33 earplug sitting in a worker's pocket. If your compliance data shows workers are removing higher-NRR plugs by midshift, switching to Mellows for comfort-sensitive workers often improves overall program effectiveness — even though individual-device NRR is slightly lower.
Are Mellows earplugs latex-free?
Yes. Moldex Mellows are latex-free. The ultra-soft foam formulation does not contain natural rubber latex.
How many pairs does the 6846 PlugStation hold?
250 pairs. For 500-pair Mellows dispensing, see the Moldex 6847 PlugStation.
Who benefits most from Mellows in an industrial hearing conservation program?
Workers with narrow ear canals, workers who have rejected all other foam earplug types due to pressure discomfort, hearing aid users, workers on 10–12 hour shifts where extended foam pressure becomes painful, and workers returning from ear surgery or infection with temporary canal sensitivity.
Does the 6846 PlugStation include a wall-mount bracket?
Yes. The wall-mount bracket is included. Two anchor screws required for installation.
Can Mellows be worn in environments over 100 dB?
Not as single protection. In environments above 100 dB, the NRR 30 Mellows earplug (derating to ~85 dB effective) approaches the OSHA limit. Use Mellows as the inner component of a dual-protection system (earplugs + earmuffs) in these environments, or switch to NRR 33 models.
Are Mellows NIOSH-listed?
Yes. Moldex Mellows are NIOSH-listed hearing protectors under 42 CFR Part 84 with NRR 30.
How do Mellows insert differently than standard foam?
Mellows insert using the same roll-compress technique: roll between fingers to compress, pull outer ear up and back, insert, hold 20–30 seconds. The difference is the holding step: Mellows expand more slowly and gently, requiring slightly longer hold time for a full seal. This gentleness is the source of the comfort advantage.
Can hearing aid users benefit from Mellows during shift work?
Yes. Workers who wear hearing aids during non-hazard periods have acclimatized ear canals to the pressure of an in-canal device. Transitioning to Mellows for noise-hazard periods is less jarring than transitioning to high-pressure foam, improving compliance with hearing protection requirements during those periods.
Does OSHA require me to offer Mellows as an option?
OSHA 29 CFR 1910.95(i)(3) requires offering a variety of hearing protectors when workers indicate a type causes discomfort. If workers are reporting pain or pressure with your current earplug models, offering Mellows as an alternative satisfies this requirement.
Can I use 6846 dispensers alongside NRR 33 dispensers in the same facility?
Yes, and this is recommended for facilities with mixed noise exposure levels. Deploy Mellows dispensers in lower-noise zones (under 100 dB) and NRR 33 format dispensers in higher-noise areas. Clearly label which dispenser is appropriate for which zone.
Are Mellows reusable?
Yes. The foam can be wiped clean with a slightly damp cloth and air-dried. Replace when deformed, discolored, or unable to fully expand. In a PlugStation program, most facilities treat them as daily-use disposables for hygiene simplicity.
What color are Mellows earplugs?
Light blue/purple. This distinctive color supports visual compliance monitoring during supervisor walk-throughs and clearly distinguishes Mellows dispensers from NRR 33 foam dispensers in mixed-model programs.
Where can I buy the Moldex 6846 Mellows PlugStation?
Check Amazon for current pricing and availability Check Price on Amazon → or browse the WC Safety earplug collection. See all hearing protection, respirators, safety gloves, hard hats, and safety glasses. For shooting applications, see our shooting hearing protection guide.
Disclosures & editorial standards
WC Safety participates in the Amazon Services LLC Associates Program. Outbound Amazon links are affiliate links. We accept no manufacturer payment, sponsorship, or product samples. This content is not medical, legal, or regulatory advice. Safety equipment selection is governed by applicable OSHA standards and your facility's safety program.
WC Safety participates in the Amazon Services LLC Associates Program. Outbound Amazon links are affiliate links. We accept no manufacturer payment, sponsorship, or product samples. This content is not medical, legal, or regulatory advice. Safety equipment selection is governed by applicable OSHA standards and your facility's safety program.