<!--begin-bvseo-questions--><!--begin-questions--><div id="bvseo-questionsSection"> <div class="bvseo-question-answer" data-questionid="4099254"> <h2 class="bvseo-question"> This is not a reusable filter so how do you determine it is time to replace a new one? Thanks </h2> <div class="bvseo-question-detail"> </div> <div class="bvseo-author">Asked by: Joan</div> <div class="bvseo-answer" data-answerid="4928519"> I determine when to replace the filter based on the time of use and what contaminants it was exposed to. I use it mostly to protect against chlorine when removing mold. When I was in Basic Training for the Army we had to experience the chlorine room and the indicator of a defective mask was the smell of chlorine so if I start smelling chlorine I replace the filter. Another indicator is if you&#39;re in a dusty environment, such as sawdust, replace it when it seems to clog up causing reduced air flow. Save the plastic cover over the threads and replace it when work is completed and place filter in zip lock bag to extend filter life. If using for toxic chemicals (pesticides,herbicides,etc.) use your judgement and replace it after the filter has had considerable exposure time, and certainly if you detect a chemical smell or air flow is reduced. Most important, consider the value of your lungs far out weights the cost of a new filter when working with toxic materials. <div class="bvseo-author">Answered by: Mountain Guy</div> <div class="bvseo-pubdate">Date published: 2019-11-27</div> </div> </div> <div class="bvseo-question-answer" data-questionid="4094912"> <h2 class="bvseo-question"> How many do you get for that price? </h2> <div class="bvseo-question-detail"> </div> <div class="bvseo-author">Asked by: SM3x</div> <div class="bvseo-answer" data-answerid="4920606"> I believe I received one when I ordered in autumn of 2017. Don&#39;t know if it is the same deal now. <div class="bvseo-author">Answered by: Grey1</div> <div class="bvseo-pubdate">Date published: 2019-11-24</div> </div> </div> <div class="bvseo-question-answer" data-questionid="3538207"> <h2 class="bvseo-question"> Does this filter contain asbestos, as many of the era do? </h2> <div class="bvseo-question-detail"> </div> <div class="bvseo-author">Asked by: Liam</div> <div class="bvseo-answer" data-answerid="4175785"> Thank you for your question.&#13;&#10;&#13;&#10;The NATO Military Surplus NBC 40mm Gas Mask Filter do not have asbestos. <div class="bvseo-author">Answered by: Michelle Prod Specialist</div> <div class="bvseo-pubdate">Date published: 2019-05-29</div> </div> </div> <div class="bvseo-question-answer" data-questionid="3497110"> <h2 class="bvseo-question"> What is the manufacture date and the estimated self life? </h2> <div class="bvseo-question-detail"> </div> <div class="bvseo-author">Asked by: Daniel</div> <div class="bvseo-answer" data-answerid="4091049"> My previous answer was incorrect. On closer inspection of the picture the 2012 date is for expiration. Experts say this particular manufacturer suggests that if still sealed, it&amp;rsquo;s good up to 5 years after said date. The one pictured was no longer serviceable as of 2017. It&amp;rsquo;s only good as a collectible. <div class="bvseo-author">Answered by: Snake</div> <div class="bvseo-pubdate">Date published: 2019-03-14</div> </div> </div> <div class="bvseo-question-answer" data-questionid="3486721"> <h2 class="bvseo-question"> can i us thias for actul fallout use? </h2> <div class="bvseo-question-detail"> </div> <div class="bvseo-author">Asked by: Kris</div> <div class="bvseo-answer" data-answerid="4073079"> yes radioactive particulate such as fallout will be filtered by these or any particulate filter. This will also filter out any radioactive nobel gasses generated during a reactor failure.&#13;&#10;You will still be exposed to radiation through direct contact with fallout particles.&amp;nbsp;&#13;&#10;mainly beta and gamma. remember in an emergency situation nbc gear is there to help get you out &amp;nbsp;not roll around i &amp;nbsp;the stuff and all gear has its limits. <div class="bvseo-author">Answered by: rad man</div> <div class="bvseo-pubdate">Date published: 2019-02-25</div> </div> </div></div><script type="text/javascript"> if (document.getElementById('bvseo-questionsSection')) { document.getElementById('bvseo-questionsSection').style.display = 'none'; }</script><!--end-questions--><ul id="BVSEO_meta" style="display:none!important"> <li data-bvseo="bvDateModified">y_2019, m_12, d_7, h_2CST</li> <li data-bvseo="ps">bvseo_bulk, prod_bvqa, vn_bulk_3.0.3</li> <li data-bvseo="cp">cp_1, bvpage1</li> <li data-bvseo="co">co_hasquestionsanswers, tq_5</li> <li data-bvseo="cf">loc_en_US, sid_702508, prod, sort_[SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING)]</li> <li data-bvseo="diagnostics">clientName_sportmansguide</li></ul><!--end-bvseo-questions--><!--BVSEO|dz:Main_Site-en_US|sdk:v1.0.7.0-n|msg:timer 31ms -->