=== HTTP code : 200 ===

Response headers
================
HTTP/1.1 200 OK
Date: Sun, 23 Sep 2018 10:50:31 GMT
Server: Apache
Last-Modified: Sat, 06 Aug 2016 02:24:17 GMT
ETag: &quot;654e6-389a7-5395de13a7640&quot;
Accept-Ranges: bytes
Content-Length: 231847
Connection: close
Content-Type: application/pdf
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Set-Cookie: incap_ses_544_48399=+5AnIxB6Nnpw2nYPDq6MB/Zvp1sAAAAAfZscQa9FaBRrPUf2vqXg9A==; path=/; Domain=.puroast.com
X-Iinfo: 0-30233709-30233712 NNNN CT(30 64 0) RT(1537699830177 106) q(0 0 1 0) r(2 2) U6
X-CDN: Incapsula

Request headers
================
HEAD /AcidityandBitternessExplanations.pdf HTTP/1.1
User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)
Host: www.puroast.com
Accept: */*
Referer: http://sothisisfitness.com
Connection: close


Link is valid.