UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                  SCHEDULE 13G

                    UNDER THE SECURITIES EXCHANGE ACT OF 1934
                            (AMENDMENT NO. ________)*


                           SCIENTIFIC INDUSTRIES, INC.
                                (Name of Issuer)

                          COMMON STOCK, $0.05 PAR VALUE
                         (Title of Class of Securities)


                                    808757108
                                 (CUSIP Number)


                                  JUNE 3, 2009
             (Date of Event Which Requires Filing of this Statement)


Check the appropriate box to designate the rule pursuant to which this Schedule
is filed:

         |_| Rule 13d-1(b)
         |X| Rule 13d-1(c)
         |_| Rule 13d-1(d)

*The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter the
disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).






                                       13G
CUSIP No. 808757108                                               Page 2 of 5


1. Names of Reporting Persons.

   Spectrum Laboratories, Inc.

2. Check the Appropriate Box if a Member of a Group (See Instructions)
                                                                         (a) |_|
                                                                         (b) |X|

3. SEC Use Only

4. Citizenship or Place of Organization

   Delaware

   Number of Shares        5.  Sole Voting Power
   Beneficially
   Owned by                    124,736
   Each Reporting
   Person With:            6.  Shared Voting Power

                           7.  Sole Dispositive Power

                               124,736

                           8.  Shared Dispositive Power


9. Aggregate Amount Beneficially Owned by Each Reporting Person

    124,736

10. Check if the Aggregate Amount in Row (11) Excludes Certain Shares
   (See Instructions)

                                                                             |_|

11. Percent of Class Represented by Amount in Row (11)

    10.5%

12. Type of Reporting Person (See Instructions)

    CO



                                       13G
CUSIP No.  808757108

ITEM 1.

         (a)      Name of Issuer: Scientific Industries, Inc.

         (b)      Address of Issuer's Principal Executive Offices:70 Orville
                  Drive, Bohemia, NY 11716


ITEM 2.

         (a)      Name of Person Filing: Spectrum Laboratories, Inc.

         (b)      Address of Principal Business Office, or if None,
                  Residence:18617 Broadwick Street, Rancho Dominguez, CA 90220

         (c)      Citizenship: Delaware

         (d)      Title of Class of Securities: Common Stock, $0.05 Par Value

         (e)      CUSIP Number: 808757108

ITEM 3. IF THIS STATEMENT IS FILED PURSUANT TO SS.240.13D-1(B) OR 240.13D-2(B)
OR (C), CHECK WHETHER THE PERSON FILING IS A:

         (a)  [_] Broker or dealer registered under Section 15 of the Act
                  (15 U.S.C. 78o).

         (b)  [_] Bank as defined in Section 3(a)(6) of the Act (15 U.S.C.
                  78c).

         (c)  [_] Insurance company as defined in Section 3(a)(19) of the
                  Act (15 U.S.C. 78c).

         (d)   _] Investment company registered under Section 8 of the
                  Investment Company Act of 1940 (15 U.S.C. 80a-8).

         (e)  [_] An investment adviser in accordance with
                  ss.240.13d-1(b)(1)(ii)(E);


         (f)  [_] An employee benefit plan or endowment fund in accordance
                  with ss.240.13d-1(b)(1)(ii)(F);

         (g)  [_] A parent holding company or control person in accordance
                  with ss.240.13d-1(b)(1)(ii)(G);


         (h)  [_] A savings associations as defined in Section 3(b) of the
                  Federal Deposit Insurance Act (12 U.S.C. 1813);

         (i)  [_] A church plan that is excluded from the definition of an
                  investment company under section 3(c)(14) of the Investment
                  Company Act of 1940 (15 U.S.C. 80a-3);

         (j)  [_] Group, in accordance with ss.240.13d-1(b)(1)(ii)(J).

ITEM 4. OWNERSHIP.

Provide the following information regarding the aggregate number and percentage
of the class of securities of the issuer identified in Item 1.

         (a) Amount beneficially owned: 124,736

         (b) Percent of class: 10.5%

         (c) Number of shares as to which such person has:

         (i) Sole power to vote or to direct the vote: 124,736

         (ii) Shared power to vote or to direct the vote: 0

         (iii) Sole power to dispose or to direct the disposition of: 124,736

         (iv) Shared power to dispose or to direct the disposition of: 0


                                       3




ITEM 5. OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS.

If this statement is being filed to report the fact that as of the date hereof
the reporting person has ceased to be the beneficial owner of more than five
percent of the class of securities, check the following [ ].


ITEM 6. OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON.

Not applicable.

ITEM 7. IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED THE
SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY.

Not applicable.

ITEM 8. IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP.

Not applicable.

ITEM 9. NOTICE OF DISSOLUTION OF GROUP.

Not applicable.


                                       4



ITEM 10. CERTIFICATIONS.

Not applicable.



                                    SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify
that the information set forth in this statement is true, complete and correct.


                                              June 12, 2009
                                              ---------------------------------
                                              (Date)


                                              /s/  Brian A. Watts
                                              ---------------------------------
                                              (Signature)


                                             Brian A. Watts - Chief Financial
                                               Officer
                                             ----------------------------------
                                             (Name/Title)










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